If you're making $90k now in your present job and the outlook is that you will continue to make $90k or better into the future, then you will be making a HUGE financial sacrifice to give that up and pursue flying. The impact of that decision could have devastating consequences down the road when you retire.
As far as the flying goes... Yeah, I've been doing this for a really long time and still absolutely love it! Unfortunately, the career is currently worth about HALF of what it traditionally has been worth. And the unpredictability/instability of it is about as bad as anything can be. I changed careers to get into this (I was in my late 20's at the time). As much as I loved flying (and still do!), had I known how little it was going to end up paying and what a stressful rollercoaster ride it would be for my family, there is no way I could have justified making the change.
Good luck in your decision.