You see some Pro's they are no good without some Con's Make your decision for what fits you best!

Cons:
Can and will stretch over time causing draw length to change. it will be subtle so you may find yourself developing bad form to compensate,without even being aware of it

Precise release attachment required may result in you having to take your eye off your game animal or spook them do to extra movement

Another component to fail, break, re-tie, adjust.

Often used to make peep's align...bigger question is why doesn't your peep stay aligned? I shoot a tubeless peep, mine isNEVER is unaligned.

Often used as an aid to make an ill-fitting bow fit the consumer.