I play Civ series since 1995 and until my last game I was a peaceful builder and a wonder addict who usually wins by late domination or space vic. Whatever the odds I was feeling I had to grab wonders, especially GL, SoLiberty and goes on...
Well, in my last game I completely revised my gameplay. Note that I was not playing since February, so after 7 months the temptation to return was irresistable
I started on huge terra, ragings barbs (who erased Chinese) and aggressive AI on Prince. I was Holy Roman ruled by Darius.(rathauses + organized + financial

)
Centuries of warfare against barbarians and when they pacify, AI started knocking my door with cats, axes and whatever they gather. You see I had no time even for a market in my capital but constant warfare.
For a peaceful builder it was really hard to bypass the shiny new wonders or buildings, but focusing on soldiers, walls, barracks and holy rathauses, trying to increase science/income only by riverside cottages.
Despite being out teched in 'civilizied' techs, I usually kept parity in military techs, being able to get longbows and landsketches on time against horse archers/maces/knights. Also I had to mention that AI constantly attacked my border city 'Phyrigian' which was founded on hills. I managed to get 3 longbows above 38xp in this bloody city and 5 generals, two of them being settled in highest cities, one of them being attached and two were reserved for military academy.
So the things have changed when I get to civil service/maces, bashing my southern neighbour Mayans to vassalage and grabbing a good portion of land, then pushing out from Phyrigian to West, capturing holy city of Judaism from English and building its shrine.
It became my third shrine and I waited till grenadiers and consolidating my gains meanwhile. Then you guess the upcoming story... A merciless war of slaughters in the age of Enlightenment.
After seeing the joy of imperfect and hard fought wars and being able to keep parity without libraries/markets for a long time (not to mention wonders except shrines) I think I suppressed by wonder addiction/builder instincts.
Currently I am converging my cannons/cavs/rifles to mount my next attack. This game will probably be a domination victory but not the one with tanks/bombers, but cavs/cannons/grenadiers.
This was a great step for a peaceful/builder/wonder addict. Now I take into account the benefits versus costs of buildings/wonders and opportunity costs.
Any comments?