Should me and my girlfriend continue dating?

Just recently I brought up the subject of breaking up with my girl friend because i have been thinking about it for a month or two. The major reason I think we should break up is because of our personality differences, I'm the type of guy who likes to constantly do new things, hang out with other people and play games with other people. My gf is the laid back and be chill type. There has been a lot of conflict of interest when we decided what to do when we go and hang out. for example I want to go to a nature walk center and she would rather watch a tv show, but I wouldn't want to do that. That's just a taste of why i think we should break up. But on the other hand I still care about her and she still cares about me. We have had a lot of good times together, and when I think of all the good times we had it makes it sooo hard to break up, but for the past couple of months these good times haven't happen as much. Also she is very cute, this also makes it hard for me to want to break up with her. I feel like these good times can happen again, but then i think our personalities are too different and im not sure wat to do so i want random people's opinions.