Re: 10 month old STILL not interested in eating
What you describe sounds normal to me, because my kid was the same way. She really didn't eat much of anything other than breastmilk and the odd piece of floor dirt until she was around 14-15 months old, and it clearly didn't do her a lick of harm, since she was always maxing out the percentiles for height and weight and was right on track for developmental milestones.
My pediatrician told me that until the age of 1 year, solids are just for experimenting with new tastes, textures, and motor skills, and are not nutritionally necessary. After the first birthday, solids become an important component of the baby's diet, but the transition to a majority-solids diet may be a slow one. It's not like babies go to sleep on day 364 needing only breastmilk, and wake up on day 365 needing a ton of solids.
So yeah, a lot of babies are eating way more solids that a lick of banana, but lots aren't. It sounds like you are doing exactly what my pediatrician would recommend- allowing solids to be a fun game, letting your baby take the lead and show you when he's done or when he wants more, and letting milk make up the majority of his diet.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"