Downloading the bootstrap has some risks involved:
1. The source needs to be trusted to not provide a bogus blockchain
2. The blocks are not fully verified by your node
If you care more about speed of your download than security of the blockchain, then the bootstap is your answer.
Hahaha,
its better than not being able to sync at all and its very easy to verify that its not bogus as the existing nodes won't validate you as a node on a bogus chain. Its easy, just check your synced wallet block height with the block explorer.
If anyone has a problem ask and I will be more than happy to answer anyone's objections.