So I have been needing a legendary helmet for lvl 26 warlock. Then I found out that Xur was selling an exotic for 13 strange coins. I only had 8. I looked at the weekly heroic and saw that if I finished it on lvl 26 I could get 6 coins, thus getting what I needed to buy that helmet. I finished it solo. (Edit) I actually did the whole strike solo. No easy task. Thanks to sun singer self resurrection, I was able to avoid "starting over". Crazy, but worth it.