To be frank it's an issue if your views on other people's looks haven't shifted after your own changes whether it's habits like smoking or former body size. You really need to adjust your thinking if you want to maintain what you've achieved. I've gone through losing and gaining weight multiple times and even during heavier periods the appearance bothered me. Provided you're not affecting anyone else and you hold back your thoughts there's nothing wrong with that.
The toughest part of earlier quit attempts has always been the emotional crash from losing my sense of who I am. I've used tobacco since childhood and those years now sit far behind me. Taking a drag gives an instant rush of feeling tough and detached, matching the image I hold of myself as a weary rebel from old action films set decades ago. Dropping that feeling cuts deep. Stopping is necessary because reaching this point in life makes any delay risky given how much time may already be lost, and further waiting isn't an option. Still the ache stays sharp.