I believe that there are many ways that proseltysing hurts. When the hoped for outcome (conversion) happens, it causes so much disharmony in families. Brothers won't speak to each other , cousins can't enjoy get-togethers. and much much more.
Then there is just the annoyance factor. With the advent of the internet and libraries, every single faith system is available to anyone on the planet.
Historically, although today is somewhat better, it has caused disappearances of entire gentle cultures. Extinction. Loss of knowledge (ancient herbology, to mention one)
I have nothing at all against ethical conversion, where there is no sneakiness or proseltysing tied to things like food and weakness on deathbeds.
Thoughts?