Anyone who left because of the DB while the relationship was otherwise great ?

TL, DR: Those who have left an otherwise great marriage due to the DB only , and have kids, how did it go ? Do you regret anything?

I (39F) have been in a DB for the past 7-8 years. We do have some sex a few times a years, I'm always the one who initiates and it's very vanilla and always the same basic things.

I've been having affairs since a little while, I love it, my lovers gave me self confidence and that feeling of being wanted that I was craving for.

I thought I could live like this but... now I'm hit with some sort of sadness and melancholia when I miss my lovers, I don't enjoy life at home that much and need to bury myself in work to make time fly until my next encounter with a lover.

I thought I had everything I wanted, everything to be happy, but I don't. But is the DB alone a valid reason to leave ? Those who have been there, how did it go ?

My relationship with my husband (39M) is otherwise great, we are very good friends, have lots of meaningful conversations, he takes over everything when I'm away for work or when I'm sick, he's a very committed father to our kids, we share chores equally. We have young kids.