edited
The Torah is for everyone and it has to be possible for everyone to have a part in it even it’s difficult in some cases.
“Ive met people who experienced a Shabbos and felt inspired , but when they went home, they were isolated on Shabbos (They lived too far away from a shul and lived with non-religious people and were not always able to go away for Shabbos and could not move) It was doomed to fail”
That’s not a failure at all!
1. They kept Shabbos one week!!! Do you realize how amazing that is? Do you know how different their portion in Olam Haba will look now???? Do you have any idea how priceless that is!!!!
2. They were inspired. Now they feel more positively towards Torah and Hashem. Maybe they will be more likely to daven to Hashem the next time they need something, maybe they will express gratitude to Hashem, maybe they will put on Tefillin when the Chabad van comes around, maybe they will be nicer to the Frum family who moves next door. Maybe their children or grandchildren will imbibe their positive feelings towards Yiddishkeit and become Frum. Or maybe their son will decide to send his daughter to Hebrew School as a result and she will become Frum and he will be supportive of her decision. Maybe they will make a donation to a Frum cause, etc.
As you wrote so wisely earlier, one can not go into kiruv expecting people to become completely Frum on the spot.
The point is to light a spark that has no end. The point is to encourage a fellow Jew to keep one Mitzvah one time. The point is to give over a positive feeling for Yiddishkeit….