I don't think this is a popular opinion at all, so thank you for expressing it. The shouting down of unpopular ideas drives me crazy - all progress is based on unpopular ideas. I think if you do a risk analysis weighing the cost of not having nukes in the face of an alien invasion, vs the threat they pose to ourselves - I think the smart money is in getting rid of them.

Remember also that nukes may not be that effective against an interstellar civilizations and the technology that implies. Almost certainly useless against the point defenses a ship that travels at a fractional percentage of lightspeed would need for targeting and deflecting/destroying small space debris. On the Earth itself it should be suicidaly useful, but if the aliens feel we're a threat to them on the ground they can simply sterilize the planet from space.

Bottom line, if we're visited by a hostile alien race, it's likely to be game over - even with home field advantage.