It's hard to remember we're alive for the first time. It's hard to remember we're alive for the last time.
Druid is a solid and versatile card, but it has the tempo problem. Sometimes you want done things quickly, Citadels before advantage cards are used, a clash before changes occur and a festival is played and so on.
Also some cards just work better when a little unexpected, fetch a good card to clash with druid and you can have some problems. A bard when collected from the discard pile is simply not as strong as a bard directly in hand for example.
This. The tempo of druid makes it a liability sometimes, ESPECIALLY if you are going to be clashing as noted above too. You can't play druid last so you have to keep two cards during a clash to be able to do anything afterwards, and this means you can be at a serious disadvantage. Geis and druid are both part of the delay tension in this game, and the former is another card some people rarely pass, but it too has a tempo problem. Knowing where these cards are is very nice, though you can't always be that sure due to the nature of the draft obviously.