Not sure if I agree with Mike's strategy. People have imbalances in their bodies and not all of them are purely caused by "too much weight" For example, I have significant hip impingement on my right side which forces me into a cant at the bottom of a squat. I can artificially fix it by moving the bar slightly or using my hands to position it, but that's not really solving the problem.
Yeah, this is very true. I have a nerve in my elbow, that when I hit 275+ it sends lightning shocks all the way up and down my arm. While I never lost the weight, nor did my arm give out, I realized this nerve was just a disaster waiting to happen. Kinda of scary, really, as this never happened in my teens. Only started when I was around 30. But, honestly, if your arm just 'gave out' your spotter isn't likely to be able to do anything either, except move the weight off of you. But if you still have one good arm, even if that happened without a spotter, you could push it over with your other arm. In that event a spotter is better, but neither is going to stop the crushing impact should something just give out abruptly.
So while I agree with the above, I think if your sets are light enough, go for it. That said, I find push-ups better overall for me anyway these day. While I can't get as heavy as a weight, I feel they work the body a lot better and being near 40 now, my days of trying to get swoll are gone. Thinks like ANW are more important to me now than lifting iron.