It is a good question, particularly as I am now recently retired.
The straight answer is yes, but with some tweaks.
I'd have got my flying started both earlier (I started at 35) in my life and at least 15 years before 9/11 and the rise of lo-co really knocked the life style of the job to bits. There is no going back, but the way pilots were treated in the mid nineties (let alone the 80's) was so much better than they are now. I'm not talking money, the money is still there if you climb the career structure efficiently. It is everything else about the job that made it special that was lost.
If I had started earlier in life I would have been able to stick to a retirement age of 55. I'm firmly of the opinion (backed by scientific research) that the airline lifestyle knocks years off your lifespan. I'm out at 61 and very glad as the deep nights were getting too hard.
I wish I had done long haul in my 20's before having a wife and family. Being away a lot is damaging to your relationships. But you have to experience LH as a 30 year SH career is simply inconceivable in the industry as it operates today.
So, on balance I'd do it all again. But quite glad that I don't have to.