Are you being sarcastic? If so I can't tell. Every single bike computer on the market has an odometer. Pretty much everyone I talk to uses it. I use it to schedule maintenance and to find out how long different things (tires, chains, brakes) are lasting.

Honestly, I wouldn't care if my bike computer did NOTHING but odometer. It's really all I have it on the bike for, other than I use the clock sometimes. I don't care about speed, cadence, or anything else. Total ride time is somewhat interesting but I wouldn't care if it wasn't there.