It depends on
1. If it is your own airplane, or hired or the bosses.
2. The actual state of the grass runway. I have come across some beautiful bowling green runways which are a pleasure.
3 Whether you like the clattering and banging usually associated with grass runways.
4. Not always, but usually grass runways are on fields too short for many twins, and if long enough are still not too good in wet weather.