It is because you have been using it for more than a decade and you so not want to use other ones.
And couldn't your comment be applicable to you as well? People "are not coming back" to Imgur because one time 3 years ago they couldn't resize a picture. Seems the case to me.
What I do is tightly connected to graphics and imagery of any kind. I use different image hosting services for different needs. Often times I have to use something else I used to use. I know what works best for me.
I can use "talkimg" but it is a new service that can be dead in a couple of years. Besides, it allows embeds only to BitcoinTalk - I don't want to have an image hosting account for each forum/social media site.
I have been using Imgbb but it is slower and less convenient than Imgur. There are probably other alternatives designed for image snippets/screenshots that I haven't tried, but the ones I tried are no good. Most importantly I've never had issues with Imgur and it does what it is supposed to do.