Yes, age is a major factor in your relationship problems. You may marry someone elder to you or if you can't, then you should have taken care of this in the first place. So you may either give him divorce or regret on your decisions.
Does the above answer seem strange? Sorry to say but this is how you are thinking and your thinking is taking you to divorce. If you don't want to give divorce, then you need to work on building mutual understanding rather than finding irrepairable reasons. You can't do anything with your age gap with the husband. Many people marry at same age. Try to see the behaviors that are keeping both of you distant from each other. You must be sharing some similar interests as his. You need to give some to your relationship. Consult a marital counselor.
Next Steps
Consult a marital therapist/counselor.
Health Tips
We can learn to live in harmony despite differences.