Don't feel like quoting someone from 3 years ago
It's just a difference of desires from a relationship, it's not inherently wrong to want to do it a lot, just like it's not wrong to not want to do it a lot or at all.
Trying to convince her to was definitely worse than breaking up. Breaking up is just the smart choice if you're not on the same page and don't want to compromise.
That said, always sucks to have a relationship end. There's plenty worse reasons than just a difference of desire though.