Why do I lose relation with westeros when executing wildlings?

[witcge]

I feel like westerosi and essosi lords wouldn't care at all if I killed wildling lords I captured, it's not very realistic for a Nights Watch Lord to hate me for executing Mance Rayder and essentially doing there job for them.

[jdm311]

I agree and would like to extend this to hated lords as well. Any hated lords should be killed with no remorse from other lords, except family or lords that have a good relationship with them..

[Produno]

The only Nights Watch that wanted to kill Mance Rayder were the ones that went rogue.. the same ones that 'killed' Jon Snow...

[witcge]

Isn't Mance Rayder a Nights Watch deserter? It would make sense for him to be executed, just like other deserters would be. Even IF the Nights Watch didn't want him dead the rest of Westeros should considering he's a Wildling right?

[stinkis]

I execute an essos lord for pillaging farms and peasants. Should it be like that?

And now i got EVERY fraction against me and no way of making peace...
It ruined my gameplay completely(other than knockout arrows).