Pool or No Pool?

I'm thinking about getting a pool. My backyard isn't very long in depth, only about 32', the width is about 100'. I've seen pools in my area with smaller backyards so I know It's not that big of a deal. My question is for anyone that's put a pool in (vs. parents house had pool, bought house with pool, etc) or has some good advice regardless. I know they can be anywhere from 30k to 200k in my area, I've heard average runs about 45k with no additional decking or fence (required in my county). What are the pros / cons you can think of? I've heard it can actually be worse for resale value and not to even think about it adding to your homes value, but only put in for your enjoyment expected no return on investment. Thoughts?