Just tried taking boycat outside for the first time now that he's been neutered, and because it's a nice sunny day! I put him on a harness with a little lead and plonked him in the middle of the garden
He sprinted straight back into the house! 
I took him out a few more times but when I was carrying him out he kept going mental and jumping out of my arms, scratching me, and going back in the house! He seems terrified of being outside
I originally wanted him to be an indoor cat anyway so my wish is granted for now haha!
How did your cats react to the big wide world?