When did our legs get weaer

ok I was trawling up another hill today in a very low gear (22 up front and 30 out back) and thought hang on didn't my old Marin Bear Valley have a 28/38/48 up front and 12-28 out back? I used to be able to get up hills then (late 80's) now I need less than 2:3 ration to move - what happened?
Trance x5
Trek 4500 (toddler chariot)
Trek 4500 (toddler chariot)
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Though I only did roads back then, plus had a few years of doing morning paper rounds on a bike.
Parktools :?:SheldonBrown
There is no secret ingredient - Kung Fu Panda
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Parktools
Mongoose Teocali
Giant STP0
Why are MTB economics; spend twice as much as you intended, but only half as much as you wish you could afford? :roll:
Even roadies it seems are not safe, the number of road bikes that come with a triple up front is huge and when i was a teenager in the late 80's early 90's that would have been unheard of no matter where you lived unless you put one on yourself.
Im not sure when but we bikers have definitely gotten softer over the years.
Merida
Austria 2012