I think of the Avengers as The Beatles, and the Guardians are the Rolling Stones. That is really how I feel about the groups. - James Gunn

Each story should be enjoyed on its own merits, without relying on its connection to a larger universe, adding that shared universes should enhance individual stories, not the other way around.

The Flash resets many things, not all things. Some characters remain the same, some do not .

Science fiction literature's focus is on ideas, the concept of change, and the impact on humanity. Those concepts are hard to capture on film. They work better in the mind.