Ah, bless. You have all the expertise on Indian culture from reading a book written 100 years ago
I found my own wife back in the last century, but the large majority of young people in India today WANT their family to pick their partner! Even the women. And the women get a veto if they don't like the guy.
Why do they want their families to pick their partners? Because of responsibility. Mum and dad picking your wife will find you someone suited to you, matching you in education / personality / intelligence / whatever. Whereas if responsibility, long-term future, ability to care / provide are not considerations, you pick the easiest girl or the one with the biggest knockers.
But arranged marriages is a red herring. The teenage pregnancy rate in love marriage Ukraine is 4%, in urban India it's 4%, in the UK it's 16% (despite free morning after pill and what not). Part of the reason is that you don't need to be able to support a child here, the government will provide.
Single parent households: 16% in UK according to some stats and 25% according to Gingerbread, some of the highest in the world. It's our social policies and support for single parents that contribute towards this problem (yes, it's a problem). The ideal environment for bringing children up is a two parent household
with a mother and a father but there is no government policy that encourages or rewards this nor one that disincentivises single parenthood. Instead, we subsidise mothers dumping their babies in nurseries to go back to work (thereby putting pressure on the family and on the marriage). Our social policies corrode family life, take responsibility away from parents (your child's school won't tell you if you 13 y/o gets pregnant!) and push people to rely on the state.