Don't feel dressed without one.
I grew up in a rural area where you couldn't hear a church clock let alone see one, if you wanted to be home in time for meals a watch was the only option.
Nor my diamond encrusted gold Citizen Ecodrive :-) I wear it all the time and regularly look at it to check the time when I'm out of the house. The last thing I use my phone for is to check the time.