If you want to torture yourself, beautifully...

It's not that hard actually. Nor, I think, is it an especially dangerous ambition even if it is also a slightly wicked one. There is simply so much new music to be found and so much of it is legal, free and might possibly benefit the artists if some attention were paid to it. Buying it would of course be far better and, in many cases, it is very reasonable.
On the other hand you can never do it all yourself - there is quite simply far too much to listen to, let alone think and then write about. So we can all forget that right now. On the other hand writing something, about any of it, is all for the good. That is at least possibly achievable and if anyone is reading and likely some are, or better still commenting, then the oxygen of publicity will do no harm. I could believe that almost nobody does that but, on the other hand, I have many reasons to believe that this is not actually true.
If you want to torture yourself horribly then that is probably best done by denying what you actually like and, equally catastrophic, pretending to like what you really don't.  I'd say that it is certainly not the way to go. Not agreeing with others about more specific things, however, is a completely different matter and the boundaries may or may not always turn out to be quite as distinct as either party might have believed. Long may it remain so.