Considering that one would have to get the hormonal IUD replaced (painful!!) every 3-8 years [1], while vasectomies only require check-ups two times after the procedure (not painful) after 1-2 months, and at one's discretion afterwards, that's a way better value proposition.
Typical hormonal IUD annual failure rate = .1% [1].
.1% * 30 years = 3%.
Considering that one would have to get the hormonal IUD replaced (painful!!) every 3-8 years [1], while vasectomies only require check-ups two times after the procedure (not painful) after 1-2 months, and at one's discretion afterwards, that's a way better value proposition.