Is thread digging really that bad?

Hmm, i thought about it for a few mins and i came to the conclusion that thread digging isn't bad at all.. if EVERYONE did it.. or even a moderate number of people did it then sure it would be bad cuz the forum would be filled with old threads but if once in a while someone feels like bringing up an old interesting dead thread then whynot? it's not like its THAT annoying and who knows.. maybe people will post in it and appreciate it again... oppinions?