Adjustable shocks?

if mon ey is an issue go to o reilys they have them for 16.99 a piece i think there good
they have what for 16.99 a piece? and maybe when i used the word "adjustable", i was wrong. should have said air shocks I think.

so why do some people say air shocks are bad?
why is it bad to use the shocks to hold up the car?


Checked out the rims, they are 4 inch backspace. 15x8's. tires are 265 60 15's..