This issue have been bothering me a lot. I was quite surprised to see number of Christains surging in my town. Almost all of the converts are the ones who is struggling to meet their ends and from the so called "lower caste". When I went home, I was talking with one of the converts and he said "we have a new God 'Yesu' (thats what they say in Nepali) and he still has tika in his fore head. These missionary ppl are targeting the most vulnerable people in our society and convert their religions.
I feel sorry for Nepali ppl including me coz we think 'calling ourselves' atheist is a matter or pride. Donot forget guys Hinduism is an ethnic religion so it is a way of life. You may not go to temple every week but you can still practice Hinduism. What I wanna say to those folks who say "I am an atheist", "Donot celebrate Dashain, Tihar, nothing. Do not put your head in the feet of your parents. Deny to put the tika on your forehead when your mom is about to bid you farewell when your leaving home." Can you do that? I just think most of us left home quite early and are confused about our culture. Remember guys its not cool to forget and leave behind what we have coz we wont realize how important it is until we loose it and the day we loose it we cant revert back. 
To sum up: HINDUISM = Our Culture + Tradition. What makes Nepal peculiar is its culture and tradition. The day its culture and tradition fades away the whole country fades away from the eyes of everybody.