The difference between a big and a little jet

When I associate Air Travel with airplanes, the concept of a big bus with 4 engines, some space and 1st class service comes to mind.



Or these



So when I have to fly a regional jet, all that goes out the window.



Isn't this a tad too small?

In fairness, it's pretty fast, if cramped. Smooth riding. No overhead compartments to speak of. Not too bad.



But still, isn't this a tad too small?