Why are yoga pants with pockets such a new trend?

I have my phone, which runs a fitness app, and is also helpful for calling someone for help if I get stranded or have an accident. In the same bag, I also have my wallet. It typically has a bit of cash, a debit card, my ID, and my health insurance card. These are all good things to have with me if I have a chance while out on a bicycle ride. I also put my keys in my handlebar bag. Yoga pants with pockets are great for resounding these sorts of things, too, although if I’m wearing yoga pants, I’m likely going minimalist with what I have with me my keys, phone, and ID card.