The system was not designed in a hurry or without much thought, even if you don't agree with it or fully understand it. Folding is free, even when you are in the blinds. It doesn't cost you anything. It is just as free to fold the big blind as it is to fold UTG. What you do have, in the BB, is a discount on playing the hand. It is cheaper for you to call, than for anyone else at the table. In fact, if people have limped, you might even get to play for free.
It makes me wonder how you would feel about my normal home-game structure. There's a single blind (say 5c because usually we're playing with the children) and a button ante that's the same size as the big blind. So, there are two people who are forced to put money into the pot, but one of them has a discount on future play and the other doesn't. It's really simple and it speeds things up. It also creates a fun dynamic.
It also helps to remember that the blind system was developed when limit poker was the standard way of playing. It still works just fine for Pot-limit, No-limit, or Spread-limit games. But, it really becomes obvious when you are playing limit hold'em. The discount in the blinds is HUGE. Against a CO raise, the BTN has to call 2xbb and the BB only has to call half as much. This makes it much easier to justify a call out of position.
The small blind is obviously the worst spot on the table, both in terms of reduced discount and position. But, that's an artifact of what "blinds" are. They represent blind bets. The idea is that the SB bet 1 unit and the BB min-raised to 2 units, before cards are dealt. It wouldn't make sense to have them reversed.
In the end, someone has to put money in before cards are dealt. The blind system makes it more fair for the players in the worst spots on the table, providing them a discount. On a 10 handed table of $1/$2, a 30c ante would put the same amount in, but then the dealer needs to check to make sure 10 people put the right amount in and the first two players after the button have to act first on every street and have no advantage. With the blinds, they get to act last pre-flop and they get a discount. In a full rotation, the cost for all the players is the same, but it makes for a much more interesting game dynamic when using blinds and not antes.