Question
Shalom, Rabbi. World happiness index said that Israel is the 4th happiest nation in the world. (South Korea ranked in the 57th place.) Israelites are very happy despite the fact that it is going through various hardships. Nations surrounding her tries to erase her from the map, and there is Phillistinian terrorism. Why is Israel so happy? What is the secret of Jewish happiness?

Question
Are there any disabilities that in modern times render an individual unfit to take part in a ritual practiced in Jewish life today, even if one wanted to?