Although My boobs are far from perfect (BF 3 babies) and I have thought about it in the past, I wouldn't do it.
It's a GA. Kanye West's mum died on the operating table getting hers done. My died died at 36 (cancer), I couldn't do it that to my kids. Although the risk is small, it is still there, so it's silly to pretend you can be sure of definitely wouldn't happen to you.
My boobs have changed significantly from teenage years, being pregnant, BFing, deflated post BFing, pregnant again.....i expect they'll change again come menopause.
It also puts me off that they need replaced. So even if you have a very successful 1st boob job and you love the results and have no complications, It's a dice you'll likely have to roll again in 10-20 yrs time, or accept the appearance of your body with the implants you have had in for a decade or so removed.
I find the right bra makes a good difference, and DH loves my boobs. I'm not perfect and that's ok! I often think of the women who have recently been diagnosed with breast cancer, or any type of cancer, and think they'd give anything for my boobs/body, and I try to be grateful for the body and the health that I have. I wouldn't want to risk it unnecessarily.