Probably some combination of not necessarily producing enough (not all people make the same amount) and lack of foreplay/edging
personal anatomical anecdote
For example I really only have precum after a decent amount of foreplay/edging, and not all that much. And a lil lubrication is sometimes useful for getting to that point.
Why don’t people just use precum? It’s plenty slippery.
Probably some combination of not necessarily producing enough (not all people make the same amount) and lack of foreplay/edging
personal anatomical anecdote
For example I really only have precum after a decent amount of foreplay/edging, and not all that much. And a lil lubrication is sometimes useful for getting to that point.
never seen precum in my life