Exactly. I have almost 0 interest in watching a preseason game at the stadium, and I'd definitely never pay to see a preseason game.
I'm on the season ticket waiting list, but unless I have a pretty open calendar at that time, I don't know for certain I'd take the tickets (in 50 years...). Why? I very much enjoy watching games at home. I like that I can invite as many friends as I'd like to watch the games. I like that I can watch other games during commercials. I like that I don't have to wait in line to go to the bathroom. I like the cost of beer and snacks at home.
I love the atmosphere at the game under the right circumstances. I'll be thrilled to bring my kids to their first game when they're old enough to appreciate it. But right now I'm pretty selective about what games I actually attend.
Just take the season tickets and sell the games you don't want? Well, good luck trying to get your money back out of the tickets when you're selling to friends and family - I just don't really have it in me to explain to people close to me that I need them to pay more for tickets to help me cover the cost of the preseason games people didn't want to go to, and the cost of taxes and fees. So now the games I do attend have a higher overhead for me than they likely would have if I just bought from someone else. And, who knows where the seats are going to be!
I know enough people that have access to tickets that I'm not too worried about missing a game I want to see live. And in that case, I'm not afraid to spend a little money, because I don't have a fixed cost associated with my favorite team year in and year out.