Humans have eaten a lot of red meat for a long time, and are probably conditioned to utilize a good deal of meat nutrients, many of which have yet to be isolated. For example, creatine phosphate was isolated some time ago, but it’s full effects on human physiology were not known until fairly recently. If these yet to be isolated nutrients are deficient in one’s diet, athletic performance will suffer.
It’s well known that an athlete that doesn’t supplement with creatine will usually feel a positive surge from a decent quantity of meat. Also, someone on a very low fat diet (no flax oil or anything, like from the late '80s) will feel great following a steak dinner.
I eat red meat as a meal about twice a week. I also have some beef jerky every day with at least one meal. Jerky is very lean and quite tasty. Only problems are sodium and nitrites, and I don’t really mind either (I don’t consume any other nitrites).
I say go for the steak. Eat red meat with gusto. On a side note, I posted some items about soy and powerlifting at a vegan site called Sunfood Diet http://pluto.beseen.com/boardroom/y/50341). Check it out – I really mess with them! After all, these people are fanatics. They act as though their vegetarianism is a personal choice, but then they go out and try to stop us from eating what nature intended for us to eat.