This thread.
I wear a watch everyday.
 * My gf doesn't like it when I'm always checking my phone. Actually, it's pretty rude when you're having a conversatin with someone to check your phone. It can also be rude to check your watch, but usually it's much better manners.
 * My conference rooms don't have clocks either. I work at the largest corporate campus of one of the largest banks in the world. Some people do put their blackberries on the table. That's fine. I like my watch.
 * I sail competitively. The way a sailboat race works is they blow a horn 5:00 before the start of the race, 4:00 before the start, 1:00 before the start, and one last one at the exact moment of the start. I don't have some fancy sailing watch, I use the same Timex Ironman that I use for everything else. I set the timer to countdown repeat at 1:00 and call out the one minute increments to everyone else on my boat.
 * I also use the timer regularly for other things. Cooking/baking or heating up leftovers, set the alarm to remind me to do something (call someone or do something around lunch time.)
I realize that not everyone sails or cooks or gives a flying fuck if they are rude to someone they are talking to. If you find that a watch has no practical utility for you, good, don't wear one, and don't post in fucking threads about watches.