Ahh Trip, I'm sorry 15 yrs is a long time. Maybe you just need to mourn your kitty for a little while longer, its very hard.
When my Rascal died at 12, it took a long time before wanting another pet, didnt want the heartbreak again, but , well I'm giving love another try so why not a pet right?
Opted for a cat since it would be easier for me alone, maybe when B is here for good, we may even try to sneak a lil doggie in, if Misty allows it lol
Be Happy for this Moment, This Moment is your Life