Imgur is much better than other services in my opinion, and I would like to continue using it, but I currently can't. I hope this is a temporary restriction.
This could probably be because you haven’t tried out other image uploading sites. But they are certainly some that could just do the work Imgur does for you without problems. Currently the TalkImg is the best fit for the forum. If you are looking for some more sites that could still be used outside the forum then checkout this
thread, there are many of them discussed there that could be a better alternative to Imgur for you.