I don't think it's ok to judge others and put people down. However, it should be ok to be concerned about the health of someone which could leader to major problems in their future.

When I first started lifting I wanted to be a Super Hero.. But that was my motivation. I was huge into comics at a very young age and nothing made me feel better than helping people. So I wanted to build muscle to be like Superman, Captain America, Wolverine, etc.

My favorite muscle to train is TRICEPS! Always has been my stongest muscle group as well.

The biggest mistake I see people make is they are not on the right program. You should be circuit training and performing cardio 4-6 days a week (depending on time).

Try to stick to free weights as much as possible as they work the stabilizers as well as the main muscles being targeted!

My motivation was I wanted to look like my favorite super heroes when I was a kid. Pretty cheesy, but that is what got me started.

Most people are just fat and because most bodybuilders juice, they can get away with eating what they want and just monitoring calories. It's a horrible misconception and often sends people down a path of fat gain that might ruin their motivation and drive. Fat cells never go away once created.