Very true, I use mine sparingly because they're heavy and a pain, but it's worth pulling out once in a while for the sear eh?
The Lodge pre-seasoned one hold up without having to totally redo the seasoning if you're careful. I have a couple and fucked up the first one really quickly, so I did a fair bit of reading
I've found the trick is to keep your washing and soap to a bare minimum, and dry it right away. One drop of soap (or none if it's not too dirty) and a quick warm water wash with a non-abrasive scrubber. Then I'll often dry it on the stove set at the lowest setting for a couple minutes (occasionally with a thin application of veggie oil) to make sure it's 100% dry and not just air drying. Seems to keep the seasoning up for a long time.