Air shocks..why?

Sorry mike I must of read it wrong. Since someone laughed at what you said I thought u were making a joke. (As if I was too lazy to replace springs and instead installed air shocks as a quick fix.) my bad. Lol
On another note how much air pressure is supposto be in the shocks. And also if I install my SS springs, how do guys stop the rear end from sitting up so high Sorry if these are stupid questions