Oh, I hate it a ton. [He says that willingly and flat out.]

[So much about this train that he hates.] But I guess you can see why I don't want nothin' bad happenin' to 'em if I can help it. It's a pretty decent feelin' for anyone worth the air they breathe, true, but I don't feel right unless I'm really tryin' to keep 'em safe.

[It's a karmic debt on top of his fatherly tendencies. It's knowing that he doesn't want these kids to turn out like him, because he still sees himself as a worst case scenario. Train might have decided they're worth endangering but Yondu's willing to throw himself under a bus for them.]