Personally, chrono function is not really a need for me or i really don't need a chrono function...
i tries my very best to use it in the following occasions:-
1) time how long my gf take to make up her mind which clothes to wear...then i can report to her that's how long i have been waited exactly...but when she's done, i usually don't say anything and "move on"...
2) time how long it take from one place to another...so that i can answer some question like "how far from your house to here?"...but the problem is, i always forgot to stop the chrono even when i've arrived...
3) time how long i have been waiting for my friend (only if i'm on time

)...so that i can answer the question like "how long have you been waiting?"....but, usually i will say "just a while" regardless how long the chrono has been ticking...
All in all, i don't really put good used on the chorno, the actual usage of the chrono is to calculate how long (how much time) it take for an object travel from one place to another place with a constant speed, right? Non of the above making sense (to me)...hahahhaha
I think i don't really need a chrono watch anywhere

Just for the style really i think and maybe have something to play (the start and stop) with when i'm bore......

Scott