Should teenage boys shave their private parts for mostly hygiene and/or comfort?

Should? --- No.. It appears to be the norm now for young men to either entirely shave or trim the genital area. It appears that sexualy partners play a role in this decision with liberalization of sexual practices, especially oral sex. There may many reasons for this practice but it is not abnormal and if you are a parent, this should not be a concern. Piercings are another issues to address and on the rise.