Quite.
There have been two types of assertion in here, in favour of the afterlife idea.
First, the assertion from personal experience - my grandad spoke to me; I can feel my sister here sometimes. So something has happened to you. If that convinces you that there's an afterlife, no one can tell you that you're wrong. But, equally, you can't tell anyone you're right.
Second, the assertion from feeling stuff - I've always felt there was more than this; if this is all there is, what's the point? So nothing has happened to you. If that convinces you that there's an afterlife, you can't tell anyone you're right. But, me, I can't see how you can even tell yourself that you're right.
Actually, in my life, I don't care. I don't need to believe or disbelieve there's an afterlife, because if there isn't, that's what'll happen, and if there is, then that's what'll happen.
I'd put money on there not being one, though, because I can see absolutely no reason at all to think that there is.