I used to do this constantly but eventually I found it tedious.
The conversation almost always went smoothly and I got the sense my interlocutor was pleasantly surprised to be engaged and had a great time chatting.
But for me it became a chore, rather than a joy. It was “work” like guiding/teaching somebody. The juice was rarely worth the squeeze.
I suppose you're comfortable with it though. Many people aren't comfortable with even the basic step of starting a random conversation or asking strangers questions/for help.
You don't need to do it, but everyone should probably be at least comfortable/confident striking up conversations with people they don't know.