Same, I love my characters too much. I always associate things with them... Like I'll be out shopping and think "oh man Antithesis would love that shirt.." etc.
your not weird. and so what everyone here created there characters, fursona, and more for a reason and a good fraction of that is to have a friend or to keep them pushing forward. My fursona that i created lives within me you want to know weird i legitly argue with him in my mind and reality. have you read the descriptions in my arts XD. having belief or trust of something you hold dear to you wether its real or not isn't weird or childish. Its creative and wonderful. IF thats what keep you pushing and living and loving then enjoy it.
I glance at my massive collection of Green Day CDs and think of Lilith. (blue haired demon lady)