Well, keep in mind I'm still new at this. I only have Base+Seaside at home, and base on Goko.
And I'm not yet in the habit of saving goko logs (I didn't even know until a couple of days ago that goko kept logs).
Most of the situations where this happens, though, are when I have an engine that seems to be working well enough, aside for the occasional dead hand. Then I'll draw two or three coins. I use Chapel, but don't think I need to stuff my deck full, if I have two (depending on the game), it rotates into play often enough for what I need. Buying estates just clogs up the works faster, and I only do that if I know I'm behind and need every point I can scrabble for, usually late-game. If my engine is regularly putting 4 silver (or 3 and some source of virtual coin), it seems wrong to just spend it on that. With things like Council room, market, or Festival in play, I get enough cards, buys and actions that I don't need woodcutter.
These are all just sample occurrences. It just seems weird to have it happen in more than one turn in a game. Of course, the real test is"am I winning?" and the answer to that is "usually." At least, against bots. My win rate is still somewhat lower against real people, and that's fine.
It's mainly idle curiosity. After all, it seems to be working for me.