I feel guilty

It's just a case of game guilt! Don't worry too much about it. Believe me, I feel sad over the sims sometimes because I've gotten attached to them (and honestly, if you spend lots of time with something -- be it game characters, a story you're writing, a project you're working on, etc -- you're going to become attached) and I've "accidentally" deleted them or changed something and felt guilty about it for a few hours. It's normal. It happens. Just remind yourself it's just game and that the great thing about things you've created, you always have the ability to take it any direction you want or start over if you'd like!