Having a nice looking man who treats you like ish vs a not so nice looking guy who treats you like gold?

My ex husband and father of my 3 year old son treated us like ish. He didn't show any signs until I was 36 wks pregnant and he threatened to throw a bar stool at me. He was very nice looking until inner ugly became his outer ugly. He wanted to kill my parents 2 yrs ago on his bday while they were babysitting our son. We've been divorced for over a yr now. He still hasn't moved on in the dating game, but I have. A guy i just started seeing has really no good looks about him, but he's nice and has a good job as a state trooper, he's 2 yrs younger than me (that's another thing, I like men my age or older I'm 33 and he's turning 31 nxt week). Like I said he isnt much to look at, he's only 5'5 and Im 5'3 and I don't want to introduce him to my parents or anyone in my fam and of course not my son. Looks wise, he's a big step dwn from my ex, but we have more in common than my ex and I did when we 1st met. My family, my dad's side can be very critical in a joking way and I can hear someone say if we ever get married don't have any kids with him or I can picture them making fun behind his back. I'm not as embarrassed to introduce him to my parents as I am my older bro and aunts, uncles, n cousins. My ex would have a field day if he saw him. I know beauty is only skin deep.