@Legend, i very very rarely ride trail centres, don’t think i have been to one in a couple of years? from experience most tracks you can legally ride are rideable if you try. Most tracks exist to get you from a to b, so have to be passable, both up and down.
From experience i regularly see people walking up perfectly rideable climbs, which simply points to a lack of fitness. The key is attitude, most riders give up before they start.
If your reason to ride is to go downhill fine, but that it no excuse for not trying to ride up hill, laziness and lack of fitness are.
And it doesn’t change the fact that lycra, makes a lot of sense if you intend to ride a bike.