Are bagels good for a housewarming party?

sure-but bring a variety of types-at least four types in a basket with at least two different cream cheese spreads, two jelly spreads and a bag of sugared almonds with a fancy bow

If you're going to bring something do it right.

Bring whatever you want.

Why not?, A variety of fillings & toppings would make them yummy & filling.

Well, I like them?

If you bring lots of smoked salmon and cream cheese.

Yeah. But I recommended you have a variety of toppings such as jelly, cream cheese, etc, available.

A variety is wisest. Maybe donuts too? Some plain, some with cream and some with jelly. We call the latter 'jam'.

Sure, why not? It depends on whether your guests are picky or not.