[HeyLaughingBoy]

It may work faster with warm/hot water, but the reason (probably lost in the mists of antiquity) that most recipes for pretty much anything say boil cold water is that many hot water heaters leave a bad taste in the water from the copper and scale buildup in the tank. Where I live, the water is extremely hard and iron-rich, so I always have to make tea or coffee with filtered water.

In the end, food & beverage is not a religion: just do what works for you and ignore the purists.