Back in college I took up swimming. I distinctly recall one day, months into training when I took off my shirt and pants to take a shower at home, an saw myself in the full lenght mirror.
Rounded pecs, full arms and shoulders, top abs and lower V cut.
Much like Tobey Maguire in Spiderman 1 I began touching and pressing my body, actually noticing for the first time how it had developed. I ended up jacking off to the sight of my body on the mirror, fondling my pecs and shoulders.
So, hell yeah, I like my body!
Since I noticed the positive effects (both health and, ahem, attention, i.e. self esteem) a healthy body gives me I've been constantly taking care of myself.