I went from a very bad monogamous relationship with an extremelly jeaous husband to a very LD poly relationship with a man and three women to a local poly relationship with a man who occasionally has other partners. He currently doesn't have anyone else but I do.
I am most definitely happier now. I don't have to worry about him throwing a temper tantrum because I'm spending time with others. In fact he encourages me to go out with friends, to find friends, to spend time with people other than him.
I'm usually the one who complains from lack of time, lol.