One of my housemates for 2 years at uni was 10 years older than the rest of us, coming into it with a previous degree and experience of a different industry. He loved it I think, he’s now doing his master’s year and has been offered a PhD place, I think he’s hoping to stay in academia now – doing research + lecturing!
(That was chemistry)
My great uncle has also done the mature student thing, although for entirely different reasons – he went back and studied archaeology after retiring from teaching geography for many years. He did it because he had the time and the money and it was something he was interested in!
I think as long as you go into it for a good reason, and will be able to afford it then it can’t be a bad thing!