I am 70, heading for 71. Love this whole vaping thing--of course you need to know that I am a huge fan of "toys," especially electronics, and this vaping thing is just plain fun for me. I DID want to quit smoking, and about time, too. I have been really, really lucky to have smoked most of my adult life and still have no ill effects, but the time comes when you think maybe you don't want to press your luck any more. Also two things happened when I retired that made me think I needed to give up the smokes--since I was home all day, I was smoking more and more, and the cost of cigs just kept going up, which wasn't so great for that fixed income thing. I was spending a lot on cigarettes and that was $$ I could spend on things I wanted more. So the desire to quit and the factors that made it more appealing to quit led me to my very first e-cig and since then not even a thought of a cigarette. I doubt I am ever going to get into all this modifying and so forth (though you never know) but I am on the hunt for the best battery for my use (something that will last all day or at least most of it as opposed to a couple of hours) and the best tastes in juice. Old or young, though, I don't think anyone is going to give up the analogs for vaping unless they really want to quit smoking.
You told my story exactly. I will be 72 in April, and despite smoking all my adult life, I seem to be in good health in spite of it. I also was feeling the pinch of the cost of cigarettes since I retired. There are so many more fun things to spend money on than cigarettes. I "needed" them, but I felt so guilty and resentful every time I bought another carton. I went to the cheapest generics, but they still cost a bundle of money. I couldn't be happier about vaping, and it's working so well for me.
I have other hobbies to spend my money on, so this will not likely get hobby status for me. I've found a set up I like, juice that is good and inexpensive, so I'm good to go.
Congrats to both of us for making this decision before we did more harm to ourselves.