So, plEASE nOHO!
It's true that I haven't downloaded a trainer in a while, but I occasionally do and it's probably because the recent games don't really need it. =/ 99% of the time I cheat for fun, inf resources, money, etc. Not to make it easier.
Same here also. I download a trainer for almost every game I play.
I have a form of attention deficit disorder, so it's typically very difficult for me to sit and concentrate on something like a game for any meaningful length of time, with very few exceptions. Thus if I die in a game I tend to become frustrated and quit, rarely going back for a second try. Things like trainers allow me to, in a sense, defy my condition and do something I enjoy without the usual limitations my brain has set up.
So for me, it would be a double loss - the trainers and the community.