"My problem is that when I did put her down, I lost pretty much all interest in horses. Maybe it is because I cannot seem to bond with my new horse, or that like you, I'm kind of tired of the show world and in my case, dealing with snotty barrel racers that can't ride the back of a pickup truck and still win because they have $50,000 horses."
You're describing classic depression symptoms. But like I said, if you need a break from the horses go ahead and take one. Just don't sell your new horse just yet, take some time.
Honestly, I've thought about gelding my stallions, selling off the broodies, getting down to 2 or 3 horses for pleasure and even questioned whether I wanted to keep that many, maybe just get out altogether. I made myself wait for a year, just because I have never not had horses and once I got out with them I've always felt better. It's now coming down to, I am feeling better about my horses and starting to want to ride again, not just viewing it as a job. I rode lots last year, just none of it for fun, it was all about training, showing, travelling, selling and GOD I got sick of the negative people in the show world. I'm taking a break this year and not breeding any mares, not showing at any shows and if I ride at all, it will be strictly on trail and for pleasure. That's what I mean by almost ready to move forward. I'm thinking of saddling up my 'go to' girl and going for a trail ride, just me and her, no one else to spoil the moment. Once I am ready to do that, and have accomplished it, I bet I'll be right back in the saddle and ready to ride again, maybe even with friends. During this past year, I've even ignored my 'go to' girl, just petted and fed her, never been on her in over a year. I have 20 other horses out in the pasture and other than the show horses, can't be bothered with even starting them. I'm looking to Ms. Patti Wats, to give me the spirit again, once I finally get on her and ride for fun again.
So, truly, I do understand where you're at, and why I'm soooo strongly advising you not to make any important life changes. If I had gone with my first whims last year, I'd have trashed 30 years of work in less than a week and I'm finally coming around to where I'm not sure that I'm ready to quit all the way yet.
Hang in there, really, you'll start to feel better, but noone can tell you how much or how soon. Just keep on putting one foot in front of the other, day by day and one day you will want to go get back up on a horse and ride like the wind again. And it may not be on Red, you may decide to sell him, but just don't do it YET, you might actually decide he's just right for you after all.