With all the immature ish you post on here, I'm shocked you're 27 tbh.
But to answer your question, no, it's not too late to get married- esp since you're male. 30 to 35 is the best time for men to get married ( esp. if they're not particularly religious, and don't mind being an older parent/or not having kids).
Oh hell nah. I want my kids to know their grandparents, I want them to bond with my parents. There's that joy seeing your kids with your parents