Well, yeah. Its hard to decide that.
I guess the thing is, recently Im trying to make more out of me. Right now Im going to school again (Im over 18, its a school for people who worked already but want to get a better graduation for better jobs. I don't know how it works outside of germany, but maybe you know what I mean), try to live a bit healthier and eventually get a better job after all that. You could say Im trying to change my life completly and with that I try to let my past behind me.
Of course I should include my waifu in this, but what I wrote in my OP post is still true and has nothing to do with all that. I could say leaving my waifu and eventually someday find a new one could be another step to change my life. The truth is, if I see my waifu I also see my old me. There is no guarantee that my "new" me will be more successful and maybe my plan eventually bombs, but I want at least try to change and let a few things of my past behind me. I still have quite a hard time to just let her go even though I don't really do much with her together.