"I considered myself a bit of a pen snob; my father had a good taste for nice ballpoint (and later gel) pens which I inherited (and would often "steal" his pens when able). I remember specifically mentioning being a bit of a pen snob to a co-worker a few years back, and it wasn't but a month or so later and he shows me a fountain pen. I was immediately enamored! I ordered one of my own at his suggestion, and once it arrived I was struck by how much joy it brought back to writing. I've even begun practicing calligraphy.
I've noticed a few benefits for myself by writing. First it's a stress-reliever. My mind is always going, and writing down my thoughts helps calm my mind down. Second I have experienced mental benefits in regards to thinking (forcing you to contemplate things as you write them), and to hand and eye coordination. In fact, I'd highly recommend public schools bring back handwriting to students.