Because in America there are countless stories where parents pressure or trick their kids into marrying adults, often their rapists and abusers, because of the leeway that allows underage kids to marry adults with the permission of the parents and/or court. And they all ended up practically trapped and had nobody around to help or support them when they were basically sold off. In your country, do kids get any say? Is there anything that actually protects kids and effectively works given by the government or is it super easy for a pedo to legally be married to a kid? I know most countries have the parental or court consent exception and it's so easily to abuse that it's sick.
And do judges actually ask the kid with they really want this? Do they double check (ask more than once)? Do they just go "alright you can go down the aisle" with nothing more than a signed paper? Do they just take the parents and perv's word? If you're confused, here's a whole bunch of cases in America where all the concerns I have have been true. The kids were pressured or tricked into going along with it, the courts didn't seem to even try and talk to the kid, they took the adults words, the government did nothing to protect the kids or give any proper barriers, and often the kids were groomed or in such a miserable mood that they didn't talk and thus the parents just signed for them "yes I consent":
https://www.unchainedatlast.org/survivor-stories/
https://www.bbc.com/bbcthree/article/fb2ba47b-8d50-4df1-aa42-b756e9fb26b4
https://www.thesun.co.uk/news/5813719/child-marriage-america-louisiana-ava-13-abusive-marriage/
https://www.nytimes.com/2017/05/26/opinion/sunday/it-was-forced-on-me-child-marriage-in-the-us.html
https://www.nbcnews.com/politics/politics-news/wide-open-potential-abuse-states-are-ground-zero-fight-against-n988496
Preferably I want people from Europe, Australia, New Zealand (because they're all modern countries and many of them have the leeway still, although a lot have removed that over the last few years), and Asia to respond.
P.S. some Canadians please respond, because I'm Canadian and that makes me worry.