I guess Romeo loves to be abused because I have the SAME CRATE as pictured in laurs post and he goes in there willingly. he brings his toys in there, sleeps in there and hangs out in there.
When I come home from class, hes usually asleep in there or playing with a toy in there and happy as a clam
when I have times I need him to be contained Ill put him in there and hes perfectly content to be in there. Most of the time when I open the door he doesn't even bother coming out. Its his space and it helps him feel secure
Those crates might look tiny to you because you're dog wouldn't be comfortable in one, but to a chihuahua or papillon they are fine, ESPECIALLY if only used for eating and sleeping.
Im not sure if you realize but your dog is "medium"..My dog is 5 1/2 pounds, there is a SIZE DIFFERENCE and with that, crate size difference. what is fine for my dog is probably not for yours. and it also depends on what Im using that crate for