I see lot of frustration and alternatives provided for slack. However, I'm genuinely curious about the degree of dependence on slack for team based communicatio

I see lot of frustration and alternatives provided for slack. However, I'm genuinely curious about the degree of dependence on slack for team based communication? Do people not use email anymore? We have slack at my company as well and yes it was frustrating, but we have email list. Thing just works. P.S I don't work for slack or have any affiliation.