You don't hear successful quitters saying they regret quitting smoking. It may have been tough early on but they made their lives far better with time.
You do, however, hear people who didn't quit smoking say they regret it when dealing with lung cancer, emphysema, heart disease, erectile dysfunction, infertility, losing fingers and toes (Buerger's Disease) and so many other problems people don't initially associate with smoking,
I quit for other reasons, not just health, but I had no clue to the number of serious health issues that were directly related to smoking before I quit.
The benefits to quitting are great and the potential horrors of continuing to smoke are great. It's your choice.