The paint on my 2010 6R Polo is shocking. I've never seen a car stone chip so badly before in my life. There are stone chips all over, and each one has cut straight through the paint to grey metal or primer (unsure).

1. Is this normal? I thought the car had just led a hard life till I put a couple of my own stone chips into it and realised it just chipped REALLY easily.

2. What do I use to fill in the chips. (Paint pen, chip kit, Duplicoat, etc, which brand?)

3. What can I do to protect the paint. Obviously waxing doesn't help. Opticoat? Nano coats? etc.?