My kitties always greet me and my fiance when we get home! They aren't allowed in the bedroom, so even when we get up in the morning, we have to account 5 minutes to just sit on the floor and let them show how much they missed us! They are 6 months old, so I don't know if this is something they'll grow out of. I hope not, especially since we make a big deal out of it to them - showing them we missed them too.
One of them is especially affectionate... if she's been sleeping for awhile and wakes up she immediately wants some attention. If we're in the kitchen, or busy doing something, she meows constantly and will come up and put her paws up our leg, indicating she wants to be picked up. Similar to what a small dog would do when they jump up on you. It's so adorable!!! I hope she never grows out of that.