I voted regularly. In my longest running group, we almost always use a grid because my friend drew and sealed a grid onto the surface of the table we normally play on, so it's very convenient. That group very much enjoys tactical combat. We don't have combat every session, but they certainly don't mind when the evening ends up being mostly combat.
That said, with my newbie group it depends on whether I'm feeling like it (and if I remembered to bring my grid). If I forgot the minis or want to rush the encounter along (because we only have a short time left to play) I'll happily go theatre of the mind with them. They're happy either way, as that group is not very combat focused. In fact, they often go out of their way to avoid combat, if possible.
And for the solo game that we run at my place, when the main group can't meet up, we never use minis. ToM all the time. That varies. Some nights there's no combat, other nights there's plenty.