DST is bad. Medicine has countless studies on its negative effects on the circadian rhythm, both due to moving back and forth twice a year, and also if you stick to a fixed time zone that is unnaturally twisted towards solar time. These negative effect impact the economy, so no, "more light in the evening" actually costs everyone. DST does not make any sense. It is just bad.
The only people who say they want DST have no clue how time works, nor how their own bodies work. They just want summer. That is what they think the question means. They want more daytime. Well you can't have that! Tilting the face of the clock arbitrarily by an hour, just so you THINK you have "longer evenings" is stupid. There is no polite way to put this. It is stupid. If you want more time in the evening, get up an hour earlier. That is what DST does to you. It makes you get up an hour earlier. The only difference is, with DST, you don't do it voluntarily, even though you could.
Making the east cost and west coast of the US have the same time zone would be stupid. The EU does that. In Warsaw, noon is around 12:00, in Madrid it's around 14:00. That's why Spaniards "rise late": the clock face is lying to you.
Stick with standard time. Have time zones span roughly 15, not the entire breadth of the continent.