I imagine data security and what the government would know is putting some off. It is part of the reason the national ID (My Number) faltered.
Off the top of my head, and I’m sure there are more, people use: tinder, bumble, Pairs, Zwei, Zekushi, and probably more. Pairs and Zwei, at least, are geared toward long-term and marriage. Pairs had a very bad UX and, of course, a cost. I did meet some people on there, but nothing lasted (one nearly did, but I wasn’t doing another LTR with a barely-functional alcoholic that otherwise was a great match).
I have a 200v induction cooktop. My only complaint so far is that I don’t quite have as fine-grained control as I did with gas, but that doesn’t matter most of the time. It also isn’t heating up and around the pan. In any case, I have a portable casette gas stove if I really want to make Chinese in a wok with high heat and the flame coming up the sides.
My water heater is an eco-cute and does quite well for energy efficiency. It was a bit of a change coming back from instant on-demand gas water heaters, but it’s fine now that I’m used to it.