It's not a deal breaker. IF your laptop doesn't have it, USB adapters are tiny and very cheap...it's very simple to add one on. This little guy would be great: http://www.newegg.com/Product/Produc...-001-_-Product
If you have bluetooth devices like a cellphone or something, it's very useful. For example, whenever I walk near my computer, my phone automatically connects via Ericsson PC Suite, allowing me to use various tools associated with my phone. If you have no BT devices, though, then it's pretty useless.
You won't find a monitor that connects with it...too slow. Bluetooth's biggest use is for convenience, not speed. It's kind of like wireless USB.