In case of intensive healing yes
Fast cheap efficient and possible free proc
Hell yes it is good

In time to time healing
Cure II is better since you cast it one time with regen and go back doing something else (mechanics or DPS)
Since my whm has more or less 1050 crit
I do often cure II crit which heal for 10500 hp minimum (and reach 13k depending on the buff)

Why would i bother healing again when one heal top any tank

...

Bit yes otherwise cure I is the best healing tool
Especially on lower level