When I travel overseas on many occasions, I get pulled out because I may be buying a one-way ticket, I may be traveling with my sister and we have different last names. That's smart profiling. Just pulling people out one at a time when we have millions of passengers in random screenings I'm not sure is the best way to do it.
For my parents' generation, the idea was not that marriage was about some kind of idealized, romantic love; it was a partnership. It's about creating family; it's about creating offspring. Indian culture is essentially much more of a 'we' culture. It's a communal culture where you do what's best for the community - you procreate.