First, I know it was a typo, but "snot to base of tail" cracked me up!
To answer your question - Nope. It doesn't matter when you get them, they're reptiles and they'll never like you. They won't be your bud or wonder where you are when you're gone. They don't want anything from you except the food you bring and to be left alone. They don't want to be handled. Some don't even want you to look at them. Generally, YOU are the major stressor in their lives.
That being said (somewhat harshly, I admit, no offense intended), every cham has its own personality. Some are more "friendly" than others and more tolerant of you (don't mistake that for liking you).
Here's a rundown of my chams and their personalities. I've had all of them since they were three months old, with the exception of Xerxes, who was probably 5-6 months old.
Ray - 1 yr male ambilobe - Always runs to the front of the cage at feeding time. Likes to be feed by hand. Doesn't like to be touched.
Baltazar - 1.5 yr male veiled - mostly ignores me and will sometimes climb up my arm when I have my hand in his cage putting out silkworms. Bit the crap out of my hand the other day when he got freaked out over my ring.
Wendy - 1 yr female ambilobe - so shy I barely ever see her move. Won't eat or drink when I'm around.
Xerxes - 7 month male veiled - will eat out of my hand. If I don't have food, he lunges and tries to eat my hand.
Marie - 1 yr female veiled - pretty docile, doesn't like to be touched, but also doesn't try to eat me.
Lucinda - 6 month female veiled - very shy and retreats deep into her plant if I walk up
Linda Lee - 6 month female veiled - will eat out of my hand, then run away until she sees another food item in my hand, then she'll come back. Doesn't like to be touched
Rana - 4 month ambilobe female - haven't figured her out yet. I'm leaning towards Marie and Linda Lee like
They've all been raised the same way, pretty exclusively by me. But they're all different. There's no way I can change their inate behavior.
I know it's a long answer for a pretty simple question, but if you're looking for a cuddly, trainable pet, the chameleon isn't for you. But if you care for them correctly and don't expect your love to be returned, they are incredibly facinating and incredibly addictive!