By using Bitcoin, they can participate in digital economic activities. Bitcoin offers value preservation, fast transactions, financial inclusion, and new investment opportunities—all together, which makes the economy more innovative and strong.
If you'd say this around 2017 or whenever the network is in traffic or congested, people will argue to you that their altcoins are far better and faster than Bitcoin.
But this argument was done long time ago and we're having no congestion anymore as the network is cheap and have been down to 1 sat per transaction and to include it, it also offers cheap fees.
By that fee if converted to dollars, many will say that it's still expensive but they're looking at the dollar value. And we as holders, we know that it's an incentive whenever the fee goes down to 1 sat/vB.