You could ask this question in the title regarding any kind of online platform or forum etc. where you are active, any association/club, any NGO, any company, any project... why are you doing this? Why are you here?
It is about the exchange, of thoughts, ideas, feelings, of adventures/experiences, of insights. Maybe also a bit about coping with trauma, ego, other mental health issues etc.
All of this, can be said, is energy and so your engagement on online platforms, associations etc. is an exchange of energy. (So, ultimately, life is an ongoing exchange of energies.)
When you properly make use of the received energies, when you process and work through them instead of throwing them away (AKA just babbling and conversing with people without this post-processing), you can gain valuable insights and
extract the essence and improve yourself.
And this is the basis for personal evolution (which if more people did it, would lead to collective evolution and finally peace on Earth).
This personal evolution is the purpose of life - learning and evolving. (Rinse and repeat this for multiple incarnations with different personalities. The wise question is, what's the point of collecting essential wisdoms over multiple
lives?)
The interesting part is that almost everything can be used as a starting point for evolution.
Start with medicine and you end up asking yourself about the soul, the life force and the balance between life and death.
Start with law and you end up asking yourself about fairness, equality, bettering of people.
Start with computers and you end up asking yourself about the connection between humans using computers, the human collective mind and how IT teams work, how systems model the real world, about AI etc.
Start dancing and you end up asking yourself if it is not just about fine motions and movements, but about harmony, the dance of life itself.
Start bartending and you will soon meet people telling you all kinds of life stories etc. - same goes for policemen, therapists etc.
So in all fields of human knowledge and activity, if you look deep enough, you face the foundational questions in life (the point of life, the wisdom in life etc.) and you can use these areas of expertise and activity to gain insights and
go ever deeper.
You just have to decide, which field or activity you want to use as a starting point.
So, to what field/activity/work do I want to say "yes"?
"On what do I want to spend larger amounts of time?" You can try out several things and for each, you notice what fits you and what does not fit you, which attributes, which properties harmonize with you and which not.
Find a field/activities, which have the attributes from the love-list and which lack teh attributes from the hate-list.
And do not cheat yourself by looking for things which are least effort - life is not easy, life is not about leisurly wasting it.
Tend to the habit of listening to yourself and explore yourself. Become a psychonaut, so to speak.
And by that, decide on what you want to say YES and to what NO.
Because, unluckily, life is not infinite, actually it is pretty short. Time is the most precious thing and the greatest gift to give to someone in an energy exchange.
Check out the book "4000 Weeks: Time Management for Mortals" by Oliver Burkeman. It is fine to be finite, and it must be that way. (Note that nothing is infinite - it may have long rhythms/cycles, which seem like an infinity, but are
really just very long finite periods of time.)
So find out about what to spend your time on and avoid the traps mentioned in the book.
The most rewarding and impactful YES things are the ones, which create a team or which are solved as a team, whether that is 2 or more people, as a WE.
This does not have to be done in a dead serious manner, with contracts, marriage, fixed roles and relations, but avoid the trap of keeping it totally non-binding/non-committal/non-obligatory. A bit of structure avoids the effort from falling apart. Everyone being on the same page helps avoid this issue.
Of course, it is possible to do everything ad-hoc and informal/formless and be fully focused, in the moment, in the flow, finely tuned etc. but by investing a bit of time to do basic planning, talk about expectations and goals, do and do-not lists, with some rough advance planning the experiences together are 10x better with modest time invested.
Having full focus and fine sensing etc. during the experience and the energy exchange is good to gather feedback for now, but doing something from a participant's do-not list because the advance planning was not done, leads to the following issues:
Thus, after-care is advisable to gather the reasons for given feedback, to calm any waves, confusion, talk about the future etc. which leads to better stability of the effort in the long term.