I believe that the very purpose of our life is to seek happiness. That is clear. Whether one believes in religion or not, whether one believes in this religion or that religion, we all are seeking something better in life. So, I think, the very motion of our life is towards happiness.
I always emphasize that it is much safer and better to keep one's own religious faith. The other major religions are thousands of years old and have long traditions.
Peace and the survival of life on earth as we know it are threatened by human activities which lack a commitment to humanitarian values. Destruction of nature and nature's resources result from ignorance, greed and lack of respect for the earth's living things.
The purpose of all the major religious traditions is not to construct big temples on the outside, but to create temples of goodness and compassion inside, in our hearts.