For me, e-commerce is one of the biggest things. Being able to pay for things that exist around the globe instantly or near instantly is something I would like to see bitcoin solve. Although I would say the biggest problem is being able to pass that money around A lot of the biggest retailers are paying their bills with fiat. If that didn't need to be the case, then smart contracts, running on bitcoin good be the way people pay for things to cover everything to be exact. For example, You're not just buying clothes you're paying the people who manufactured, you're paying the warehouse that stored it in a distribution center near you and you're paying for shipping.