My mother did a maths degree in her 50s, remotely, over several years. She grew up in a time and place where she didn't have the opportunity to get that eductio

My mother did a maths degree in her 50s, remotely, over several years. She grew up in a time and place where she didn't have the opportunity to get that eduction. She just wanted it for the sake of it, I suppose to prove to herself that she could. But mainly to "get the qualification", not do anything with it. It was a perfectly fine reason to do a degree. Plus I think the person you're responding to was being at least a little tongue-in-cheek anyway so no big deal either way.