< On lazyness and growing up...
I get the sense that you must be the backbone of your workplace for your employer to accept that deal. By which, I mean: while you think of yourself as a slacker, you're probably the opposite. In fact, you seem to work only when it has meaning---and this is how you can be so productive when the chips are down.
Work's first and foremost role in society is not to produce, but to establish hierarchies. That's why 'slacking off' is frown upon, even where it would improve productivity: it gives you agency outside of your employer's control, and thus challenges the ascendent it has over you. But, in your case, your boss would be much more humiliated without you. I say you're doing really well!!