For perspective, 300k$us at 1.5% divided by 365 is about 12.33$us/day in interest income (4.5k$us/year). That may seem like nothing to some people, but compare that to the following chart ...
How to use that chart, the right most bar is the percentage of the world's population that lives under the poverty line if the poverty line is set at 10$us/day. Yep, 80% of the people in the world live on 10$us/day or less.
How do they do it ?
Experiment - go to the grocery store with 10$us in your pocket and go shopping. No, skip over the potato chips, hamburger, and ben and jerry's ice cream and go to the aisle where beans and rice are sold. Now spend your 10$us buying as much dried beans and rice as you can buy, better get a shopping cart, it is going to be heavy! Don't like beans and rice ? Go to the refrigerated section and see how many chicken eggs you can buy for 10$us, again, you're going to need that cart! Oh, or how about sugar, go to the baking aisle and see how far 10$us gets you with sugar, more sugar than you and your family are going to eat in a month and then some. Don't like any of that ? Head over to the produce section with your cart and start piling bags of potatoes in until you hit the 10$us mark, hope you like potatoes, because you just bought a few weeks worth!
One 50$us sushi dinner in the United States can feed a family for a month if it is spent well.
Most people in this country just have no concept of how well off they are.