Why is so hard to get a husband?

I’m 30 with a job, I earn more than enough for myself, i have my own house and cars. I’m not ugly and not fat (at least that what people say to me) I know people have different tests but i got a lot compliments about my appearance from people.

But why is so hard to me to fine a partner for serious relationship? I saw so many people get married after only dating for 6 months, a year. etc
But why for me is so hard?
I am independent, submissive and i never asked a man for money. But it’s still so hard to find someone who has the same energy or interest to have a little family.
Why is so hard to get a husband?
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