I bought my 997.1 C4S in 2014 at 5 yrs old in very good condition.
I used to put it away for three months every winter and found that after coming our of hibernation it creaked and groaned, and was generally a but grumpy until it was used regularly again. When standing still, rubbers still perish over time, things start to seize up etc. so now I keep it on the road all year and run it whenever I need it. These engines love to be used.
Just keep it well washed after use and dry off the brake discs, annual oil & filter services, then parts as required.
I know everyone is different but unless you are keeping it as a museum or showroom piece, which many that can afford it do, then use it , life's too short.
I had a BMW 3 series that I bought from my employer after it was renewed on lease. It sat outside in all weathers for 16 years and was used daily, cleaned and serviced as per the manual and parts as required and never missed a beat. .