as you know I have two ratties and they are the best pets ever !! (I love them sooo much) they are better then any rodent I have ever owned.
I have had gerbils, hamsters, and mice and rats are the best to me so far .

it is so cute how my rats popcorn around when they get excited. and They will run after you when you let them loose lol.

there isnt any bad thing I can thyink of except for health problems and vet costs.