Every activity gets boring if you do not introduce some varity.
Civ 5 got hundreds of time more of my playing time...
No, it does not get boring!
The actions during the turns in civ5 are very repetitive.
And most actions don't require thinking, it's simply work.
See this video :
Spoiler :
[YOUTUBE-OLD]BtTEgO3HE40[/YOUTUBE-OLD]
So, you're are contradicting yourself.
And to the OP : your mind is telling you something. Try to find out what it is.