You can only truly answer that question for yourself. A lot of people have different purposes for being on the forum, some are here to make a buck (while contributing constructively), some are here to do the same (with no regard for the forum), some are here for very niche discussions and others are here to learn. You got to know why you're here and check if that's still on the cards for you.
One thing I'll say is while we've lost a good number of high quality users, we still have a good bunch of them still here.
How's the spam been? The forum basically became virtually unusable at a certain point. The noise to signal ratio was 100:1 at best.
Even without the option to earn by posting there was spam, so there certainly would be with that. You just got to drown out the noise and control what you read.