I’ve never tried a pillow under my back or hips during sex but see it done a lot. Soooooo my question is, Why are pillows under the hips so important during sex or maybe what’s the point?

Oh there are a bunch of reasons why people do this!  I think the most common reason given is to create a better or at least different alignment for vaginal or possibly anal intercourse.  Another is that it can be more comfortable for some people.  Yet another is it can help if one or both of you have a bad back.  It can also be sort of a “presentation” thing since it can raise your naughty bits for looking, touching, or tasting.

As for the alignment business, depending on how you place the pillows you can increase or decrease the depth of penetration, make it easier for the partner with the cock to reach their partner’s g-spot, prostate, or other inner hotspots, it can create much better contact between one partner’s clitoris and the other partner’s pubic bone.  And, again depending on how you use it, it can help increase friction on a penis if more is needed, or reduce it if, say, one or both partners has a concern about “premature ejaculation.”

Plus it can just be for fun.  Or laziness.  Or variety.  Or…

My best recommendation would be to try it and see if you like it.  

Awesome if you do, don’t worry if you don’t.