I've always put years but have also openly admitted having gaps. I simply told I wanted some free time. Or were messing around with some pet-project (which I do

I've always put years but have also openly admitted having gaps. I simply told I wanted some free time. Or were messing around with some pet-project (which I do put on my CV). Or learning some new language (which I don't put on my CV). It's never been a problem. Perhaps because I never acted weird about it.