There is this great app called Tinder where you can make romantic overtures to people who are voluntarily there for that purpose, and do so on your lunch break!
It really just depends. I can literally count dozens of acquaintances who met their significant other at work, just in the past few years -- who are really happy together.
I mean, compare being at a place with like-minded people, people who likely share some of your interests, education background, etc. vs. swiping right/left for the 2-thousandth time so much so that you are fucking exhausted and questioning your self-worth after having been denied for months on end.
It's totally okay if you've started a romantic relationship at work. Just don't be an ass about it is all -- let HR know as needed, keep it professional, and all of the other obvious stuff.
As another anecdotal datum: my dad and stepmom met (and started dating) as coworkers, and they've been married (happily, as far as I can tell) for 25 years now.