I could write a book about all the pros/cons, but basically, it retains temperature very well and is slow to change. I don't have a/c as the house never gets above 78 in the summer, no matter how hot it is outside. One thing I was sure to do was install a PEX radiant floor heating system in the floor before pouring the slab. I built an outdoor wood boiler that powers it in the winter. It takes a few days to "charge up" the floor with heat and then it's golden.

Cons - It can get musty. It's sorta like a living in a basement so good water proofing and drainage is essential. My house is very large with interior rooms, so light only penetrates the front of the house. It stays very dark in the back. I have added "sun tunnels" to help bring in more light back there.