The general problem with buying bitcoins with credit cards is the fungibility of the good you're buying. In other words, bitcoins are so fungible that buying them with credit cards becomes a problem.

When buying anything else with bitcoin, it's generally hard to resell the item, and make your money back. With the amount of credit card fraud, buying bitcoins with a stolen credit card would mean sites offering this service would have too many chargebacks, and they would have to charge a 5% fee on top of the 3% VISA already takes. Few people are going to want to pay an 8% markup on money. Money has a very definite price, they're not like other goods. You can see that you're paying a hefty markup, and people don't like that.

Bitstamp allows you to buy bitcoins by wiring money to them: https://www.bitstamp.net/help/how-to-buy/

It might be me, but I really don't see why wiring money is so hard. I just log into my online banking site and set it up, takes a couple of minutes.