28mm Made Me Question Everything about 35mm?

My go-to travel lens has been 35mm, after going through all your 28mm photos, I questioned everything I thought I knew?  Which is better for familiar locations versus brand new destinations, which do I pack if I can only pick 1?  That was my dilemma across Taipei and Tokyo, I tested a modern 28mm vs a vintage 35mm to come up with 5 new rules.