Welcome. Honest opinion from another newcomer,
There will be minor annoyances along the way with updates. For a newcomer these can appear as minor crisises, if you have no idea where to begin. The audio you've strived for so long to get to function in a predictable manner can suddenly start to behave unpredictable again. The clipboard can suddenly lose functionality. And so on.
More experienced users will just make their adjustments and continue like nothing happened. Sometimes you have to wait until the next update, or the next few ones after that.
Much of that you have to accept as part of being on a rolling release. I don't know how long I'll stay with Manjaro, it could be one year, five, or forever. Many people who need a very stable production environment, or ''tire of fiddling'', go back to point releases. I see no reason to go to Arch if you want to be on a rolling release, as long as you can install Manjaro ''the Arch way'' to you hearts content, and reap the benefits of being on Manjaro.
In any case it will always have a special case in my heart, as the football team you grew up with, and where I learned a lot of basics. In 15-20 years I believe all home desktop distros will be rolling, point releases will be for corporate use.