I'm only half joking. Seriously, I'm about the same age as Brad Pitt and Tom Cruise. The difference is, depending who you ask(most people), they're better looking....and they have more zeros in the bank.
There really isn't anything new about online dating, though; it's just a high tech version of the personal ads lonely people used to place in newspapers, when I was a kid, repackaged for the instant gratification generation.
If I were to do online dating, this is what I would do, though, if I didn't feel like I could get away with the advice I already gave you:
I would put some of my hobbies into my profile, and tell any girl interested in meeting me, that our first date was going to involve one of my hobbies, period, non-negotiable. Don't care if she's never done it before. I'll teach her, but if she isn't at least adventurous enough to try it once, she isn't my kind of girl anyway.
That way, you're doing something you already enjoy, and that you'd be doing whether she were there or not, instead of spending money in a restaurant you would never go to, wearing shoes that make you uncomfortable, talking about bullsh1t that bores the crap out of you, and trying impress a girl you don't even know if you like, yet.
This way you're treating the woman like the optional accessory she really is, instead of giving her the false impression you're going to make her the new center of your universe. She either jumps in your sidecar or waves goodbye to you from the street corner, as you leave a dust cloud.
Doesn't matter what your hobby is. If you like skydiving, take her skydiving. If you like scuba, do that. If you won a couple buckles, back in the day, take her riding. Just make sure it's something YOU like to do, so you aren't wasting your time and money doing something you hate, to impress someone you don't know. Probably best if it isn't camping or hunting....although a date at the firing range could be really cool, especially if you're a retired 18-B, and she's Jane Fonda. LOL