Because Eight is worth it.
Plot twist: The next companion is a normal girl/boy who only dies once in their lifetime and has no remarkable back story but he thinks they’re wonderful because they are human and the Doctor needs reminding that you don’t need to be a mystery to be remarkable.
The thing you’re looking for is Classic Who.
Not you, Jamie.
Disarm you with a smile
And cut you like you want me to
Cut that little child
Inside of me and such a part of you
Ooh, the years burn