Obviously everybody is free to use whatever suits them the best. In fact Ltc makes more sense than the other two for coffee transactions since it is fast, cheap and is as widely adopted as btc.
I sorted them based on their privacy abilities. Monero is the most hardcore privacy oriented coin so people who demand the hardest privacy will use nothing but monero because it makes more sense. The biggest handicap of xmr is that it has low liquidity and that’s not a small problem. Especially when you want to cash out over a million usd.
People who demand the best privacy still prefer to use btc over monero because of that probably.
It doesn’t have to be this or that in the end. There is a place for many alts in this market.
Drifting a bit OT, but I don't think XMR has that low a liquidity. It's still trading $50 million a day. And it then follows that the more people use it the more that number will grow but people have to want to use it.
And I don't think a lot of people care about privacy as much as we think.
Most people want to pick out the stuff they want, pay for it and move on. Zero thought about privacy or what data tracking info is being sold.
Which is why when Samourai gets seized, mixers get seized and so on the general thought of most people is 'meh...whatever' even people in crypto. It's just not something they care about.
Which is also why XMR and a lot of privacy coins don't get a lot of traction,
Just my view.
-Dave