I put it back on.
A guard protects much more than shirts, you can direct the sparks as the guard will pivot around. Helped today as I was working pretty much pinned under a trailer about a foot off the ground. Could only use one hand at any time.
The guard was a life saver. Controlling sparks was a blessing. Using it as a guide for the one handed cleaning was great also. Keeping the wheel off the wood in those stressed and stretched positions would have been impossible without the guard.
Took me a few years and a near accident to realize what I have been missing. I will never remove another guard.
And I will never work laying in gravel, underneath anything so low you stay stuck 50% of the time. I hurt from head to toe.