You’re not alone—lots of sellers feel the same about “eBay delivery.” It’s meant to simplify things, but in practice it guesses weight/size, limits courier choice, and assumes everyone has easy drop-off access. eBay say it’s to make postage “standardised” for buyers, but it takes away the flexibility sellers need. You can still set your own postage in some categories, but the push toward Simple Delivery has definitely put many casual sellers off.