I am not expecting any life changing things here, although I would not doubt that many people in history could attest to learning a new instrument having a profound change in their life. For me, so far it has been something simple, but noticeable:
I have found that I listen to music differently. I also find myself enjoying music I used to not really care for. I will listen to just about anything, but I find myself appreciating the sounds more now. I also notice that I specifically try to pick out the bass (something I usually have to try to do because of hearing damage).
So how has learning to play changed you?