I do believe in spirits. I think they linger for some unspecific periods.
I've read something awhile back, an african belief that there are 3 stages of passing.
First stage is quite short and the second stage is Limbo and they linger there as long as there are people on earth who still talks, mentions or remembers them. And when they are no longer remembered, that's when they pass on to their final resting place called Zamani (mn. Gone)
Edit to reply to Soul: Yes i do, pretty much all of my childhood. Everythng else since has been a major disappointment. Honestly i can say i can't wait to die.
Do you feel there's a void in your life? Something missing?