Wow. I haven't looked at this board in years and the first thing that catches my eye is this hateful post. Being tall, there is absolutely nothing worse than walking to your seat and hearing someone audibly say, "Oh, Jesus Christ, of course someone tall has the seat in front of me. Ugggggh." How rude! I usually offer to get them a booster seat and to sit as low as possible (which I don't have to do, but try to be kind).
But if you don't want to see the show, then continue being rude and complaining to your friend. That feeds my spine to sit up as tall as possible.
I am not required to purchase a ticket at the back of the house. Being tall I often have my view blocked by kissing couples, big hair, wide shoulders, people who lean forward in their seat. I've sat next to people who've unpacked a full picnic lunch, played on their phone the entire show, talked, etc. Going to the theatre has pretty much turned into going to the circus.
I am more often than not admonished for my height (6'2) at the theatre and that is what is selfish. If you truly cannot see because of a tall person, kindly speak to them like a human and try and come up with a solution. People are a lot more agreeable than you think. It's not my job to just assume you cannot see a damned thing and that I need to make myself uncomfortable for you by default because of my genetics.