I'm a -20, so small differences really magnify.
I might be able to stretch it now, but I'm coming up on my presbyopia years, so I'm not sure it's worth the money if I'm only going to get a few years of stability.
At this point, I'm hoping I take after my mother and get some really early cataracts because then I can just pay for the lens and the insertion/replacement will be covered.
If you can afford it, I would go for it, though. Personally, even for people who are candidates for PRK, LASIK, etc. I think ICL is still worth considering because it has some benefits. Less risk of dry eye and the ability to change the lens if your prescription changes. Longer recovery period, though.
Ophthalmologists will bring their newer assistants in to look at my eyes to see what a severe myope looks like. I got contacts at age eight, so they also use me to show off what a scrupulous contact user’s eyes look like after >40 years. I’m a physician myself, so I’m happy to oblige - some things you can’t understand until you see them.
For the most part, it's...fine. Insurance has no idea what to do with me and that's frustrating, though. Somehow, I have eyes this bad without any associated pathology, and companies don't understand that the needs that such severe myopia presents on its own. I wear custom made RGPs; they can custom make softs but they're horrific (or at least they were 13 years ago when I gave up on them).
Isn't it hilarious every time you go to a new eye doctor? It's actually really cute: I like watching them get all giddy. They get so excited when they can't use the machines (a lot of them will only go up to a -15) and have to measure my RX manually. You can just see how they're like 'oh my God, I learned about this in school!'
Now I usually look for practices that work with keratoconus patients. They usually have practice with strange prescriptions and unusual contact fittings.
Multifocal contacts are probably not a good long-term fit for those same reasons, and there's the same problem with progressive lenses in glasses. Old-school bifocals are okay, but limited in the usual way.
I have monovision contacts and they work pretty well for me, though mid-tier (e.g. desk computer) work requires special glasses.
I find them very handy, as my progressive lenses are rather limited for closeup work.