I don't think it is weird. Pets are not self sufficient, they need humans to care for them and teach them. It is extremely easy to get highly attached to a pet and do love them. Dressing them up is a matter of opinion. I have, at times, put a sweater on my dog...primarily because it was winter and I was walking her. I have heard some veterinarians say that dressing a pet for the weather conditions, in the case of rain or snow, with shoes and a jacket would be beneficial to the pets health. I know lots of puppy parents go all out with outfits and bows and that is not something I do, but a dog who is dressed up very early will adapt to it.
I realize pets are not children, but as much as we humans dote on them, do for them and teach them, it is easy to love them...though I would never put my pet above the needs of a child.