Why do people not seem to have an attention span any more?

If you look at everything, it feels like people are stressed out, have zero attention span and need everything to go by quick, quick, quick.

TikTok lives on short clips you scroll past faster than Sonic the Hedgehog. My favourite card game Hearthstone keeps increasing game speed because people don't like games that go on for a while, and I see more and more people wanting their cooked meal to get ready asap rather than let it sit there and getting even more yummy.

Why do people want things to go by so fast nowadays? Why not enjoy the moment?