I get my nails done every 3 weeks, sometimes every fortnight. It costs me £30, only takes an hour, and it's relaxing as it's in a proper spa. I get BIAB, which protects my nails so the length is all my own. Beforehand, they were always snapping because I live rurally, have kids and dogs, and have hobbies like fencing and horses. This keeps them strong and lovely looking, and I also really like nail art. Nothing crazy but stuff I definitely couldn't do at home.
I can afford it so I do it. I prioritise things that make me feel put together or just happy - nails, regular haircuts, massage, facials, etc. I'm far from glam, but I look nice and well kept.
As mentioned in this thread, I also find it tedious when people try to claim these things equate to lack of intelligence. I have a PhD, I'm an ex librarian and now work in management at a publishing house. You can be clever and put together! In fact, almost every woman in my circle (academics, authors, publishers, so on and so forth) takes great care of their appearence. For themselves!
They also don't impede my ability to clean, cook, or look after my children. 🤣 They're just nails!