nothign is stopping me. I love using bitcoins 
))
))But does not aware of bitcoins, Once bitcoin reaches to all common people It will come and arise to the all category people. Still so many people near my location they dont know what is it. When I explain about that. They didnt believe as well. We should solve these things
I also think the ignorance of bitcoin stops people from using bitcoin. Not many people know about bitcoin or the benefit of bitcoin.
It mostly is ignorance, yes. Laziness plays also a big part here. Some people do know Bitcoin, but they just don't want to do some research about it. It not hard at all to learn about the basic things of Bitcoin. For the average Joe there is no need to go in depth. I think that the biggest hassle is the signup and verification process on Bitcoin exchanges and setting up a wallet that must sync the entire Blockchain.