Possible answers:

  1. men on the autism spectrum who want a relationship but can't get past the dating phase

  2. conventionally unattractive woman who can't get any guy to commit and give quality time

  3. people who live in rural areas and are too poor to move

  4. people who have alot of responsibilities to family and have little energy or time for dating or relationships. Financial, carer etc.

  5. people in conservative countries who have to be very discreet otherwise risk all kinds of social consequences, marriage being the only option which in itself has many clauses

I'm sure there's more but those people aren't vocalising it online or in real life. Let's talk about people who genuinely deserve empathy and compassion!

As a bonus question, what is actually hard to do for most people? For example an average guy who wants to have and maintain casual flings with many attractive women.