Depends for me. In my casual day to day I don't but when I had a lot of appointments to meet I find it quicker to check the time on my wrist than bu fumbling for my smartphone in my pocket, something that is probably even more true for women if they store their phone in a small bag due to lack of pockets.

Also, sometimes I like leaving my phone at home because I have unfortunately developed the tendency to give it a short glance whenever I have downtime. If I still need to know the time I can still wear a wristwatch.