good advice, Joanna
I already "me" - I want to be with someone else. As my wife of 30 years said a long time ago - "I don't have to share in your idiosyncrasies - but I do need to appreciate them - I have enough of my own"
She wanted kids - I didn't - so we compromised and had a couple. Same with dogs vs. cats - "we" compromised and got a dog. I think you said it pretty well - (paraphrased) are you looking for reasons to break up, or reasons to stay together? Look hard enough and you can find either - communicate openly, and make your choices.