Which starter did you leave behind and why?

I feel like starters are designed to be our journey-long companions and people usually stick with them until the Elite Four and Champion. I'm curious about when this is not the case.

If you did leave a starter behind, which Pokémon was it, and why? Was it because they didn’t fit your team’s strategy, or did another Pokémon simply work better?

For me, it's only happened once: Quaquaval. I fell in love with Quaxly as soon as I saw him but ultimately did not love the designs of his evolutions. The feathers and the dancing felt maybe disorienting to me (No shade, Quaquaval fans!). In my head, I swapped him as my "companion" for Dachsbun.

I’m curious if certain starters are more likely to be dropped than others. What’s been your experience?