My kids don't care about skiing after 5 years. :(

5 years of rentals, season passes, destination resorts, and my elementary school kids still don't care about skiing. They were really excited the first few years (20+ days/season) but it's been dropping to ~5 days/season now. They were in a multi-week lesson program that motivated them to practice, but don't want to take lessons anymore.

We even got their friends and friends' families into skiing, and my kids might go if their friends are going. My kids complain they're too tired; most of the time they'd rather hang out with friends, read books, or basically chill out at home.

We've tried to make skiing as fun as possible for them with s'mores, snacks, playing in the snow, etc but I think I'm ready to give up pushing them to keep skiing.

What has worked for other parents motivating their kids?

Edit: Thanks everyone for sharing their experiences and advice. I think we're going to give the kids the option to choose whether to continue skiing or not like many of the other hobbies they've dropped. Skiing just hits particularly hard since it's something my wife and I love and we've been getting out kids involved since before they could walk (sledding/tubing, playing in the snow).