Saves bending down to re-tie all the time or spending ages when you get a knot in them.
One knot usually lasts an innings for me and has done since I've been 8
I'm forever having to re tie my laces, I wish they'd bring out puma disc spikes I used to love those trainers
I can arrange an apprenticeship with the Scouts if you like Canners? Knots are covered in great detail there