I'm the same way, I was in a 3 year relationship, I saw a future, marriage, living together.
She told me she wanted all those things to, even before I thought I wanted them and I believed her. I started to believe in love and sure I wasn't Prince Charming, I wasn't the most romantic, I am kind of a delinquent, plus I was lazy and a procrastinator. She wasn't perfect either, are many differences caused us to fight alot, which I ALWAYS had to fix, because it was my fault all the time apperently. I said with her through all of it though caused I loved her more then anything else. When are three year aniversary came close she dumped me saying she wasn't happy anymore, a few days later she was dateing her bestfriend, who had just dumped his girlfriend...in short she left me for another guy.
So fuck relationships, and I hope I never fall in love again, if it does happen I'll fight it!
Since i've been single ive made a bunch of friends that I just couldn't when I was with her, I feel more free and i'm starting to get stress free *I'm still healing from the breakup, it was only a month ago*
Losing her was the worst feeling I have ever experienced, for someone to not be in love with you in the blink of an eye when all your feelings are still very much strong for her.
That is why I think it just isn't worth it. Serious relationships are a complete waste of time seeing as how they usually all fail and people get hurt and damaged. Thats just my opinion though...there are those cases of people celebrating there 50 year ani, I just don't think i'll ever see that, or I don't know if I would want to try again.