Sweating, perspiring, becoming a little hot under the collar - getting overly moist is the bodies natural way of cooling you down. Call it what you want, but having wet patches under your arm pits isn't the most sightly of sensations. Vanity aside, sweating is in fact your best accessory.
Others admire you for it – men absolutely love it when they see you working out. The pheromones must waft over and they're impressed. Women also like to see a man working up a sweat - the Olympics anyone?
It releases endorphins. Fact. Exercise makes you happier.
It calms you down – this is very true, when you're angry, or feel you have pent up stress, exercise can be a great reliever/provide an overall cathartic release.
You inspire others – when you see others running, breathless and quite sweaty don't you think 'I should be running?' It's a great source of inspiration. Let others watch, make them stare and maybe next time you'll see them jogging on your route. Jealous is the best motivator - people envy your dedication; don't let them down by stopping.
You will look better - Sweating is a natural way of ridding your body of impurities. It is the best cleanser for the skin.
Sweat, although unpretty, actually makes you glow. Seriously - your face may be red and puffy, but you start to develop that after-workout radiance, and soon the redness and puffiness is gone..
You become more self-aware. Sweating makes you realise how un-/fit you are. If if takes you a while to work up a sweat and a lot to exert you, then well done you. But if you tend start wiping your brow after five minutes you know your fitness needs work.
I think it's time to hit the pavement/gym/bedroom. Whatever works for you, get your sweat on.