No spark

I've been going on a lot of dates lately but there's no spark with any of the guys and I'm not sure why? They're great guys, they have all the qualities and characteristics I look for, they're super good looking but I don't feel anything, no spark at all.

Could it be because I'm not ready (I'm not sure whether I'm not but could it be a way of my brain subconsciously telling me I'm not ready for anything?)?