From an economic standpoint, fossil fuels are at once the foundation of how Western society achieved success, and an impediment to moving forward.

From a climate / CO2 discussion, nuclear solves the fossil fuel issues.

From a Grid perspective nothing currently on the table provides enough megawatts to keep the street lights on in NYC (safety), the AC powered in the South / Southwest, West, or North in the summer (health and life safety), or the heat on in winter (life safety).

From a defense standpoint, if we all aren't fighting over oil, wars over resources are no longer an issue, or at least they will shift to water (we can de-salinate were it not for energy issues).

From a renewable energy view, all these are viable to varying degree of energy quantity and logistic circumstance, none of them solve any of our macro problems, now, 10 years out, maybe further.

This is a 30 years old developed problem (or older), the last 6 years of Executive office didn't cause it, and continuing to try and look short sighted only magnifies the problem.

I'm careful to use the term "bridge" for these reasons, in the future we will have many differecnt options, right now we very few.