Are uncirculated coins a good investment?

I'm curious, are uncirculated coins really a worthwhile investment? On one hand, they seem to retain their value quite well and can be quite rare, which could make them an attractive prospect for collectors and investors alike. But on the other hand, aren't there risks involved, like the potential for a sudden drop in demand or a shift in market sentiment? Plus, isn't it important to have a deep understanding of the specific coin's history, rarity, and other factors that could affect its value? Ultimately, what's the best way to determine if investing in uncirculated coins is the right move for me?