I used to like Eclipse but honestly it was and still is a hog. At the time i used it in the late 2000s it was basically the best IDE for C++, having features that Visual C++ users either did not have or needed to pay extra for plugin to get. I used it at work then when everyone else used Visual C++.

However at home i had a computer i bought late 2003 (which was a high end PC at the time but still) and the program was so heavy i remember despite running it under a lightweight environment (just X with Window Maker) i had to choose between Firefox and Eclipse because otherwise things would crawl due to the excessive memory use both programs made :-P.

Eventually i switched to other IDEs and forgot about Eclipse. But i did try it recently again and while obviously doesn't feel as heavyweight as it did back then (i'm running it on a 8 core machine with 32GB of RAM so it better be), it still feels sluggish and startup time is still quite slow.

Also TBH i never liked the idea behind workspaces.

These days i don't write C++ much but when i do i use either QtCreator or Kate with the Clangd LSP (which i also use for C).