lentils are *terrible* for me - too small to be chewed properly.
I recently have given up beans for the most part, unless I cook them really well myself (after being canned). it's not so much of a being digested issue but just a gas issue, which, with a pouch, is all internal (you can't pass gas without being concerned of passing stool) and can be really noisy and uncomfortable.
since surgery I eat more meat, but my whole diet has changed.
as most have said, diet is individualized so there's a huge range of what your experience could be.
I just wanted to let you know that I do miss beans but can and will eat them if the circumstances are right