If you're not changing your own tires a lot of cycle shops charge a good bit for labor to mount tires.

Seems like most shops around me want $200+ in labor to do tires. That got me to just start doing it at home. Although it's a pain to do it right with spoons and not mar up the rims (or your fingers). I'm not bothering to invest in the space for a whole tire changing station in my garage. I definitely don't blame people for just eating the cost and doing it at a shop.

It's different with car tires because there's tons of places that do car tires. Far more competition with big national chains all over the place. Not always true with bikes. The labor costs they charge for dang near any little bit of work really drove me to do almost everything I can at home.