>>204208i'd like to aid in the answering of your question.
>>204248 isn't wrong but hasn't included everything.
Quick draws as the name implies are meant to be quick, which is why they do not have locking gates on them. They're usefulness has a wide range of ways to be clipped in to secure you.
Some of the more popular routes you climb will have protection that is drilled into the wrong along the way these are usually located on parts of the rock where they aren't any features to put your own personal protection in (ie. cams or nuts).
