Yeah, the wifey and I were in Europe last year for 2 weeks. I don't remember exactly how bad it was but it was definitely worse than here so I guess we shouldn't b**ch...............but, its still just a matter of what you're used to paying and how much the increase is that makes it difficult to swallow! Prices have been on a drastic increase lately so it is just rough because we didn't get any warning!
Towed the wifey's horses today home from the inlaws and had to fill her truck. We payed $3.46 and put like $67 in and didn't fill the tank because it was too expensive. We knew it would get us to our closer-to-home-stations which have to be cheaper than that!? 
That's the biggest thing my mom didn't think about expense-wise when she got her horse a couple months ago. Before she was using her van mostly and getting 16-20 Mpg. Now she's pulling her horse with a 1/2 ton pickup that gets 9 mpg on a good day. It's killing her budget. Didn't help that she got lost and ended up driving around for 3 hours with horse in tow going the wrong way.
Not to be a stick in the mud (which I can be when not reminded to shut up), but as you say, it's not the price as it's compared to what they pay in Europe, it's the price as compared to what we paid last year. It's not as much what we are paying at the pump, though that's important. It's the effect it has on the cost of everything. Gas is one of the core costs of business, along with electicity. Both of which are rising at alarming rates. The result is the cost of everything going up more quickly. Food, clothes, toys, whatever. When gas goes up it cost more to get it to the store, that's transferred to the price. When electricity goes up it costs more to run the machines and light the factorys and that cost is transferred to the consumer. Inflation has been tooling along at around 5 or 6 percent even during the more economically successful times. But with gas up over 60 or 70% from what it was a couple years ago, it's only a matter of time before that rise will be reflected in the cost of everything.