45 year olds are just older, that's all. thir taste in gaming has not changed since they played em in the first place. HOW HARD IS THIS TO UNDERSTAND?
Well, pretty hard considering it's simply not true.
I'm 25 and my taste has changed significantly over the years. Over many many things, let alone videogames.
My point was that eventually we will be 40, and to expect that Sega will cater Sonic games to us is insane. They have to draw the line somewhere. Modern Sonic are aimed at sub-15 or close, with some nods to older fans who still enjoy it.
Sonic Mania on the other hand is being made for us, who played the originals.
Take deep breaths, relax, don't take it so seriously