Honestly depends on the situation I feel. If people are just registering up a bunch of valuable names then yeah I'm not a fan.

The other kind of person is (like me, so bias) the type who register domains with a project in mind but time or resources don't get funnelled to the project so the domain may as well be released back into the wild - In this case the domain still has however long it's registered for left on the registration and will likely be scooped up by a domain drop bot by the first kind of domainer. It's always nice for a failed project to at least break even through the domain sale.

When killing off projects I usually try to find someone who might like to own the domain and offer to push it to them gratis if they've got an account on the same registrar if the domain's going to expire within 6 months or so