My dream is to own a horse sanctuary. If I win the lotto, I'll buy a huge, state-of-the-art equestrian estate and fill it up with useless and special-needs horses. I'd also grab as many horses out of kill pens as I could.
I'd have vets, farriers, and massage therapists on duty at all times. The horses would spend the rest of their lives in luxury.
I'd also give free "Horse Ownership 101" seminars.
That would be freakin' sweet
Also, a less lofty dream of mine is to take my horse to the beach and go swimming with him. =]