There is a difference between Nirvana in Buddhism and the happy feelings we feel in our lives.
@slowwalker, Exactly right. For take Nirvana to someone, he or she have to do more difficult tasks. They want to sacrifice lot of their passion. But if someone got Nirvana he/she never born in the world. Actually nirvana is a huge achievement in human's life Buddhists believe. But more people looking their secular world's happy. It's temporary. You have explain explain perfectly. Beautiful perspective of view this temple.
You're right. Reaching Nirvana is the biggest task for Buddhists. Thank you always! Have a nice day :)