When it comes to determining what counts as a chatzitzah for mikvah, we say that nails which are too long (the length that they would bother the person), then they have to be cut or they would ...
You didn't cut your nails last Friday; now they're too long. When should you cut them: midweek? or Friday?
There are various disadvantages to having long fingernails; they are enumerated in an article on the Community Magazine website. But the article also states: The Magen Avraham says that one ...