What are the pros and cons of a Gemini?

Could you elaborate on the advantages and disadvantages of investing in a Gemini cryptocurrency exchange? On one hand, I've heard about their robust security measures and user-friendly interface, which could potentially make trading more accessible and secure. However, I'm also curious about any potential drawbacks, such as limited coin offerings or high fees, that investors should be aware of before making a decision. Could you provide a balanced assessment of the pros and cons of using Gemini?