Is it normal that my parents keep giving my uncle stuff but he never uses them?

My uncle is in his 50's- he's a bachelor, has never had a girlfriend, has no extra curricular activities outside of work, claims his house is always messy so we can never come over (That has been his excuse for years, since I was very little), and has no friends that we know of (He mostly hangs around his parents on the weekends)- but he's perfectly happy like this.

He's also incredibly stubborn.

Ex: He's used the same wallet since he was in high school- it's completely ruined, something a homeless person would pick up from the trash. He's gotten multiple wallets for his b-day and Christmas over the years, but he never uses them. He wears old, used clothing that usually has stains on them, and wears ruined shoes that are completely ripped apart. We give him new shoes and clothes, but he doesn't wear them- again, we have been doing this for years.

My dad is a bit of a funny guy, and likes to make people laugh- mostly with funny little sayings he puts on Christmas cards, b-day, and anniversary cards. My uncle has this odd obsession (Although the term may be too harsh) with Morgan Fairchild, and my dad takes advantage of it by including funny sayings in presents he gives him regarding her- they're dumb and quirky, but I find them a little bit humorous.

Thing is, he doesn't find them funny. He's just confused by him. I think there's only been one time where my uncle found it funny, but that's it; my dad has been doing this for him for years.

This year, my uncle is actually asking for certain items that we've been giving him all along (Clothes, shoes, anything regarding Morgan Fairchild). He also asked for CD's of a certain music genre he likes (I can't remember which one), and my mom has gone to the extra length of burning mixed CD's for him.

I constantly keep telling my parents that no matter what they give him, he's not gonna use them. (I highly doubt that even if he asks for these things that he isn't gonna use them). I tell my mom that he isn't gonna listen to these CD's (I'm pretty sure he doesn't have a CD player or any other music listening device), but she still insists that he'd listen to them in the car on the way to work. I keep telling my dad to stop going to all the effort to make these funny paper-things he gives to my uncle but he responds by saying that he has to keep trying... and that as long as he thinks they're funny and cracks himself up, he doesn't care :/

My parents, and my grandparents, keeping trying to give me uncle all these wonderful things, but he never uses them. I tell them, "What's the point of giving him these things if he's not going to use them?" The fact that I have a lower opinion of my uncle then I should doesn't lessen the annoyance I have for my parents for constantly going the extra mile for him (I should note that he does seem excited whenever he gets these things... for the most part. But like I said, he never uses them).

is it normal that my parents and grandparents keep going the extra mile for him after all these years?