Sort of like Steam, PSN, and Xbox Live has (even Nintendo has it). GOG should get prepaid cards so we can use that to buy games. I'm not too fond of using credit cards or prepaid credit cards especially with that kind of info being easily able to be taken and used by thieves. Honestly I have never used any credit card info and probably never will. But I wanna buy games on this site so bad. Please make it happen GOG.

They don't have that feature yet. Can I add it?

GOG.com is Europe based, but serves worldwide. Setting up a distribution method for physical pre-paid cards is a logistical nightmare, so while it may happen sometime in the future, I doubt that it will be soon, or that USA will be in the first countries to get it (again, doubt it will happen before 2015, and unsure if it will happen at all).
As for your CC concerns.
GOG.com does not store any credit card information, it's a one time transaction that only leaves the last 4 digits of the CC (standard procedure for all CC transactions, even if Brick and Mortar stores). Assuming you know where you are connecting from (aka don't use CC while on public Wi-Fi), the possibility of someone intercepting it is slim. Also, there are some pre-paid cards available in the US that you can use for electronic transactions, though make sure they allow international ones, since quite a few blacklist GOG.com transactions. Maybe another forum member can give a few suggestions.

Finally, you can always offer to trade steam games for GOG.com games, since Steam does offer what you ask from GOG.com, while it also (usually) has cheaper prices than the EU ($ vs €).

You can, there's an add button somewhere on there. However it's unlikely to go through. GOG very deliberately don't store additional info. Such a card would possibly make them a bank, and would certainly make things much harder for them. They try to keep a light informatio footprint for everyone's benefit.

I think there's a wishlist item about a GOGWallet, sounds like that's the one you want.

Added it. I haven't seen the GOGWallet. But I'm not asking for US first thing, I actually have heard Gamestop is trying to set something like this up. I'm just adding the feature to the CW so they know it's being requested.

We had a discussion about this in the past month actually if you want me to dig it up for you.

All right.