Any reason to not get UK/EU citizenship?

[HardRJones]

Are there any reasons for someone who is eligible for UK and EU nation citizenships (let’s say something like Italy, for the sake of approximate specificity) by ancestry to not get these citizenships? Assume US citizenship and no other citizenships or residencies at the moment. Conventional wisdom says the benefits outweigh the drawbacks, but are there any contrarian views?

 

[daniels27]

If your alternative is US, you cannot lose much. You already have global taxation, hence not much risk by getting global taxation by France and UK.

 

[KJK]

Mandatory military service in Greece, Estonia, Croatia, Sweden, Latvia and Lithuania (each different and can be avoided to some extent)

Exit tax and worldwide citizenship-based taxation plans/ideas in France and Denmark

Dual citizenship not allowed in some situations in Slovakia, Austria and Slovenia.

Italian citizenship probably has only benefits for you and no negatives.