I believe in both sadness and joy. I think, however, even when we have reason to mourn the loss of someone dear to us, that we can still have joy. I rejoice in the fact that they are with God and they cannot suffer. I think it is harder for those left behind, but even then we do feel joy for our new saints in heaven.
We have only to watch children at play. They are brimming with joy. Yes, I believe in joy because I have experienced it in so many ways for so many years - joy that is united to the joy of the Risen Christ and cannot be taken from us.
Though you have not seen him, you love him; and even though you do not see him now, you believe in him and are filled with an inexpressible and glorious joy,