"I keep losing to the card that kills my minions. How do I avoid having minions?"
If you read the previous poster's response, he mentions that the key here is to not "over-commit" to the board. You can still play minions, but you need to use wisdom in regards to how many minions to play onto the board at a time. If you expect the opponent to have a board clear or two, simply play fewer minions at a time, so the loss doesn't affect you as much and you can reload easily. THe quickest way to lose a game as an aggro or minion-based deck is to throw everything you have onto the table in the hopes of overwhelming the opponent when there is a good possibility he has an answer to it.