My brother and I were allowed to smoke since about 15ish, didn't blaze with mom at first month or two of getting weed, but I had numerous back operations though so it wasnt really any worse then endocet they used to prescribe back then, got phased out but was harsh on the stomach for some like myself being younger, smoking weed was ok and made playing video games while in body casts for months at a time a little funner lol. I didn't actually smoke with her much but she has given me weed everyday throughout highschool (lunch money and bowlpack, for morning when she left for work, bowl afterschool/nighttime), lol...
Did it work out well? No I am 26 and still live at home ROFL, but i dont think weed was the cause haha, I don't take it for granted though I know some of my close friends had to deal with only getting weed from other people smoking with them, or from money they had earned working, mine has always been free handouts from parent. I used to do like blues clues searches for weed some mornings or after school, searching heater vents during summer (wouldnt get hot), vacuum hoses (we never vaccumed when she didnt ask us rofl), inside books on the bookshelf, man so many spots I had to search to get high, in retrospect I can't believe how routine searching for weed stash and getting weed for free was. I was a douche n a half lol, always had to have more weed. Now at 26 I've slowed down at blazing to more like 1g a day, but I don't think if I had kids I would really wanna blaze with them too much, thats for their friends n stuff, I do blaze in same room as my mom yeah thats common if I want to watch show with her or movie, I myself don't care to share the same bowl as much but yeah I've done it a few times wasn't really weird.
Doubt in having kids but I would probably not like ask them to blaze myself, even as adults to be honest, but I wouldn't be against it if they asked me to and I knew they smoked, if they are 18-21ish I suppose.