Many people use all three sizes in competitions like conformation, agility, and flyball to name a few. Many Poodles are avid hunters and retrievers. They make excellent rescue dogs, and are perfectly happy being a lap dog for the couch potatoe kind of human. Poodles think they are human, they love their owners faithfully and want to be with them. Poodles do not shed.
Many allergic people find they can tolerate beautiful breed.
Willing to play, cuddle, or simply snooze by your feet. These are big dogs in little packages. Standards have the distinction of being a big dog in a big package, but not hard to handle. Please do not support puppy mills, backyard breeders, or petshops. If you are thinking about buying a poodle do as MUCH research as you can.