It does seem a bit extreme to hide only micros in a nice wooded area. Personally I've got 12 hides and have covered all the bases. Nano's, micro's, smalls, mediums and larges in a variety of areas and abilities, from urban park and caches accessible to strollers and wheelchairs to 2 hour hikes up steep terrain in the woods. A good variety is always preferred. You don't want to get a reputation as a town of micro's. But a challenging nano in the woods can be a brain buster that makes you go arrrrgggggghhhhhh. It's no fun if you always find em, it's what makes finding em exciting. There's a micro close to work I've visited on break 4 times now without making the find. I hate micro's in rocks, but it just wouldn't be the same without em.