Nightclubs, yeah, most bars aren't nightclubs though.
Bars are a fairly decent place for low stakes socialization, at the very least.
In person dynamics are just different - I met my husband in a bar. At the time neither of us were looking to date anyone for various reasons but we happened to get chatting and our chemistry was immediately apparent. If he were exactly the same person but I first "met" him as a dating profile on the screen I almost certainly would have passed.
Groups could be drinking at someone's house. They're paying money and arranging transportation to be doing their group drinking in public. It's rude not to engage with them.
Bars are a fairly decent place for low stakes socialization, at the very least.
In person dynamics are just different - I met my husband in a bar. At the time neither of us were looking to date anyone for various reasons but we happened to get chatting and our chemistry was immediately apparent. If he were exactly the same person but I first "met" him as a dating profile on the screen I almost certainly would have passed.