If you are going to be hiking in muddy conditions, wide gaps in the lugs and tread pattern will help prevent clogging with mud, negating your traction. Conversely, those who take an extreme view on Leave No Trace, may feel that a deep lug pattern is too damage to a trail. Modern adhesives have advanced greatly and are extremely reliable. Because a quality boot offers a sealed seam around the perimeter of the sole, it has a natural waterproof ability. Cemented welts are relatively easy to repair at a quality shop.
Cemented welts are also much lighter than stitched welts.
Welt Soles A stitch welt is when the sole is sewed to the upper. Anyone who has in the military will remember the stitching at the base of their combat boots that would tend to trap black shoe polish and took some initial skill in learning to work around. Stitch welt boots until recent improvement in adhesives was considered the mark of quality. Because they don't have a continuous seal around the sole of the boot, it is a potential entry point for water, and the exposed stitching is more liable to be cut or wear out. However, stitch welt boots are very easy to repair.