You didn’t say it was sexless. You said it was infrequent and not to your liking in general.

It’s understandable you want more sex. So if you are unable to stay due to infrequent sex, then you’ll leave. It’s seems like a solution.

I don’t think anyone said that sex isn’t important. It’s just that you can’t force someone to enjoy it or scare them into having it more often. It doesn’t work that way.

Of course you are free to end your marriage for any reason or no reason at all