Grass is greener kind of thing I think. I have had tits for like 27 years, not all that exciting anymore. I have a list of things that I would do if I had a penis for a day.
It isn't the same and you know it. My husband Is going to look at me like I am insane the next time I go down on him, and once he is nice and hard, rather than climb on, I put it back in his boxers and start doing cock pops while giggling.
Freud would say you have Penisneid https://en.m.wikipedia.org/wiki/Penis_envy