First, as mentioned, if your gun won't shoot steel, fix it until it does.
Now, the reason steel can be an issue is because, well, it's steel. But, not for the seemingly obvious reasons. It's not harder. I even think someone determined it actually softer than brass, but I'm not sure. The issue is elasticity or obturation rate. Basically, how fast it expands and contracts. When a round is discharged in the chamber, the case expands against the chamber walls and creates a seal. Then as the pressure declines, the case shrinks or bounces back to a smaller size. Steel does this at a slower rate than brass. This explains why some people complain about sootiness in the chamber area when shooting steel case. The steel doesn't always expand quickly enough to seal the chamber against blowback. The dirty chambers can add to friction and wear during extraction. Which brings us to steel being slower to return to a smaller case size and therefore slower at releasing itself from the chamber walls. In short gassed systems (carbine) extraction already occurs during a peak pressure time. Longer systems are usually past peak pressure. But, because the steel is slower to return to a smaller size, they are being extracted while often still sealed against the chamber walls. This is what puts wear and tear on the extractors and why you hear some complaing about steel case breaking extractors, not because the case itself it hard on the extractor. The extractors are trying to pull a case out of the chamber before the case is ready to go.
I had a .45 Officer's Model that demonstrated this issue clearly when shooting steel case ammo. It would often try to feed a round into the back of a spent case in the chamber. The case was not "stuck" per se, because you could tip the gun and it would fall out. An Officer's Model has a very fast slide cycle time compared to a full size or even Commander size gun. Upon firing the gun, the slide would cycle, but the extractor was popping over the rim of the fired case, because it was still expanded against the chamber walls. The slide continued to the rear and then coming forward, picked up another round and feed it into the back of the fired case in the chamber. First time it happened, I though, great, stuck case in the chamber. But, after removing the magazine and misfed round, the fired case fell out of the chamber, having returned to unpressurized state. Subsequent checking showed that case could be dropped in the chamber and "poured" back out. That same ammo worked fine in a full sized 1911.
Anyway, just wanted to give some background info. Yes, you can shoot steel, but just be aware of the additional factors that influence wear and potential malfunctions. Especially, if you have a short gas system. Keep the chamber clean and keep a spare extractor.