It sounds like you may be suffering from the early stages of MBS – Multiple Bike Syndrome. The good news is that you’re not alone; I don’t think I’ve ever seen a motorcycle I couldn’t at least appreciate. Granted, the big tourers like the Gold Wings and Electra Glides aren’t really my thing, I still think they are cool in their own right.
I love dirt bikes because that’s where I got started and you don’t really have to worry about traffic with them. (And your typical street bike just doesn’t handle the jumps all that well!) Meanwhile, I love the sportbikes and naked standards for their aggressive styling, awesome performance, and amazing use of technology. And, yet, I also like the cruisers (particularly the power cruisers) just because they’ve got style and offer a greater chance for individuality. (Between you and me, I really like the HD Night Rod Special.)
As far as the size goes, it doesn’t require as much extra muscle as you might think. No, they aren’t “first bike” material and they are certainly a handful (a Gold Wing weighs in at nearly half a ton!), particularly at low speeds and in tight spaces. But, if you had to be a giant or a professional body builder to ride them, they wouldn’t be nearly as popular as they are. (And they really are popular.)