Depends on the size of the company and/or where you fit in the organization. If your manager is also the owner then there is something to be said about keeping

Depends on the size of the company and/or where you fit in the organization. If your manager is also the owner then there is something to be said about keeping a friendly relationship. If it is some middle manager several layers deep who doesn't mean anything in the grand scheme of things, then yeah, it's a waste. That time would be far better spent speaking to the CEO or board of directors.