Man, I am just horrible at Embargo. Or I overestimate how much the Curses hurt. But I also buy it a lot, because I like the card too much.
Embargo experiences I remember include:
The general "Embargo Province to buy time for my deck to catch up".
Getting horribly locked out of the game by a Governor deck that Embargoed Governors 2 or 3 times (don't remember which) and Province 6 (!) times, using Governor Remodels to cruise to an easy victory.
Isodom game where I tried doing Treasure Map/Embargo Gold with no other TM enablers (which was horrible)
General Potion blocking (one IRL game where I tried to Embargo Familiar before anyone could buy it, one game where I Embargoed Vineyad)
An engine game where I got a heavy lead by Embargoing Village, then repeatedly Embargoed Village and bought 2 to empty the Curses out for the 3-pile.
Blocking Duchy/Estate in response to early Hoards (the one game where I felt I actually played Embargo well)
It's just so amazingly game-warping, if someone decides to warp it.