Imagine a great trail, now think of dropping millions of tons of torn up concrete sidewalks on the trail. Full suspension, with a tall bottom bracket was what I used. Just like riding up a 8 inch curb every 10 feet for the entire ride on some trails.

Lots of people ride hardtails and even fully rigid bikes, some people use full on Downhill rigs. Unless you have incredible bike handling technique, you will have more fun with full suspension, IMHO