Should I upgrade my gear?
Not totally a question I can answer for you, but in the event you do want to upgrade here are some tips when shopping.
Need vs Want
Your style photography
What you shoot
Planning to keep or upgrade again
Work or hobby
What does new gear offer that your current gear doesn't
These are some things to keep in mind when looking for new gear, wether it's lenses, or a new camera body. The list above can help you determine wether to upgrade or not.
Happy reading! Hope you enjoy the posts!