I've been primarily a finger picker for most of the time I've been playing but in recent years I've been playing more and more with a flat pick as I have pain in my right hand thumb joint (similar to what I had in the left before undergoing an arthroplasty) when I play fingerstyle for too long a period. I suppose it depends to some degree on where the difficulty is situated in your hand. Using a heavier pick (1.4 mm for me) helps as you don't need to stiffen it by applying more tension when you're digging in and to play with a lighter touch you actually just lighten your grip on it.