No there is nothing wrong with feeling like you have accomplished something by giving birth vaginally, i am happy that you feel so good about your deliveries.
"But I went through a lot of pain, uncertainty and personal effort to bring my babies safely into this world, and that means something to me."
Here you are suggesting that anyone who has had a section hasn't suffered these same problems.
Which is just wrong, i think you will find that anyone delivering in any method including sections experience some sort of pain, definatly uncertainty, increasingly so as sections have sligtly higher maternal mortality rates.
Personal effort, well i suffered for 7 months carrying and protecting my child by denying myself drugs and treatment that was very important to my health, physically, and mentally, which even compared to a long drawn out labour lasting a few days is considerably bigger time frame of endurance.
I frankly do not care how a baby comes into the world, so long as they are healthy, and that the method worked out well for the mother.
I do not feel superior for having the birth i wanted, i feel happy that i had the outcome i did, and i feel sad that some women still feel that women who choose sections are weak.
We all have different priorities, and in the same way you would always want a VB, i would always want a section, i can't ever see myself wanting to experience that, but i certainly do not judge women who choose a VB, why on earth would i?