Full series watch - is it worth it?

I have an incredibly boring job. To stave off the tedium i've been watching x-files during work. I've got half way through series 5 and it all seems a bit...rubbish? Feel like the story lines and writing have got kinda tired and Duchovny is clearly (through what I can only presume is boredom) trying to entertain himself! I loved the first 4 series and i'm just trying to work out if I should quit while i'm ahead or does it get good again?