Indicated and suitable for companies and agencies that work with the creation of materials for social media, digital graphics and printed materials. Suitable for any scenario and for those who want to produce high quality material without image pixelation. A scenario not very suitable would be the use without proper knowledge of the tool, it would be interesting to see the tutorials and guides available by Adobe
Pixlr is well suited if you need to design graphics quickly, and using foreign languages. The fact that even if you use a non-Roman script (in our case, Khmer) but can still design things beautifully, is a huge value add for our team. It is less well suited for absolute beginners to graphic design, who can find the myriad tools and functions overwhelming or confusing
Illustrator Files can get large/cumbersome when you begin to incorporate high resolution photography, especially if you 'place' the photo instead of linking to it's source file
Typography can sometimes be a challenge, especially if you working on different machines that may not always have the font you need installed or sending the file to a commercial printer
OLDER versions of Illustrator can be a bit temperamental about being backward compatible though this issue has been greatly reduced with Adobe's move the Cloud Based subscription model
Not great for large print layouts (books, magazine etc) you're better off to move the project to Adobe InDesign in that case.
While Adobe Illustrator CC is one of the only true design software out there, it really stands heads above the other products. It's clean UI and menu structure is easy to navigate.
There's a bit of a learning curve to this software vs other similar tools that can take some time to learn and get familiar with but the amount of functionality that Adobe Illustrator CC offers is quite large compared to simpler tools.
I normally already know how to do whatever I'm trying out, but the documentation (as well as a simple Google search) makes any question quick to resolve. The Adobe boards themselves are a fantastic resource, especially for resolving questions between new programs and iterative releases.
I chose Rhinoceros 3D because it is accurate to make drawings in it and it is better to make drawings in Rhinoceros 3D and then put them in Adobe Illustrator. But while printing or scaling it is much easier to put it in Adobe Illustrator. This makes the whole printing aspect of it much easier.
Canva is a similar program using for creating content. I've tried out their suite as well but always end up coming back to Pixlr because of ease of use, and my familiarity with the product. They continue to make upgrades to the product and have always had what we feel we need to make top-notch looking graphics for our organization.
Pixlr offers something new and relatively easy to use that does not require excellent knowledge. In the case of professionals can make adjustments and artistic retouching of great value and excellent quality.