Did you drink the coffee that came from those grounds?

If you find it tolerable to consume, then your pile should too.

There are People who wouldn't compost them, but they wouldn't drink the coffee, either.

I say better in your compost than in a landfill.

There is no reason you could not use decaf coffee grounds in your compost. The caffiene in the grounds today is mostly removed thorugh a water process so nothing harmful, except lack of flavor is in them.

No, I never tasted decaf -- I personally think it's a waste of good coffee. I was asking so that I know if it's ok to get both types from coffee shops. Thank you.