It's a reasonable idear to convert BTC to FIAT, but to tell you the truth, converting BTC to FIAT is a big hassle to me (i have to sign up on an exchange, verify, deposit, exchange, make sure my wire details are ok,... ). After all these steps, the BTC wil be exchanged to "real" money sitting on our bank account, so my wife wouldn't be comfortable letting me buy a gun with it...