Yes, absolutely, its worth it; to me. Whether its worth it to YOU, you will have to decide after you do it.
There are two ways to look at this. Is it working now, and do you enjoy it, and does it work ?? If the answer is yes, the upgrade may or may not go well, and may or may not be without snags.
The other way to look at it is this: if there are models in 9.5 that you want and don't have now, or fields, or if HH told you to upgrade to get current support, etc. In which case, you will probably enjoy the upgrade.
In any case, you will probably enjoy the upgrade. Just Do It.
marcus