I know plenty of ugly men in committed, loving relationships. You're the one bringing up looks. I don't think it matters what you look like; if you want to date a computer you have some kind of psychiactric disorder.
Marriage is traditionally a terrible bargain for women, but it was the only choice they were allowed to make. Now, they can make their money and buy property and have kids on their own.
A lot of men haven't realized the era of the provider is over and dead, and they're now optional. They have to make women want to be with them, and a lot of women just aren't willing to compromise on equality these days.
In most western countries, low income women do not become much poorer if they become single mothers. In some places, it increases their living standards. But for upper middle class families, a breakup tends to be costly.
Also, there seems to be shared causal factors that lead to both stable relationships and financial stability. Such as impulse control, mental/physical health and the ability to postpone gratification.
Cool, child support and alimony optional now. Right? Because it's always easy to be independent with OPM. People forget single moms became far more practiced after the state incentivized breaking up families.
Nobody "wants" to be in a romantic relationship with an ugly person or computers.
Now just because some people end up doing that, does not mean that it is what they want. It might just be the best option available to them.
Given the choice however they would always rather have someone handsome and gorgeous instead.
Looks are supremely crucially important for somebody to seriously crush on you, be genuinely infatuated with you and have a deep burning desire.
An ugly undesirable dude or ugly fat chick is not ever going to experience this, surely they might (or might not) end up with a pleasant relationship of convenience... but it is not what they want. Works of fiction and computers are the only way they can experience a glimpse of desire and infatuation aimed at them.
This really isn't that hard to understand for people who have empathy.