Why should house and fence painting require licensing? I hire people. If they are removing a tree, replacing septic lines, doing electrical work, I want to see

Why should house and fence painting require licensing? I hire people. If they are removing a tree, replacing septic lines, doing electrical work, I want to see they are licensed, bonded, and insured. If their lackey screws up and hurts himself I want their insurance to pay. If the tree falls the wrong way and destroys my house I want their insurance to pay. This is why I always ask them about their bonding and insurance and need to see evidence of each. Many never come back after I ask for that! But if I'm hiring someone for painting, it's different. Anyone can do that okay. Along with minor household repairs.