All my previous bikes were steel. Never owned any aluminum. I too use to be worried and paranoid about the lack of new steel bikes. Just getting my first carbon fiber bike in 2020, it turns out that all the hype about steel being real is just that, Hype. Sure you can feel differences in them, but only in the way you feel the road and handling feed back for things like turning on twisty trails.
Even riding my sons aluminum Trek Emonda, the only thing I can say about it is that it too feels different than carbon or steel. But not really in any uncomfortable for riding way. Just in the way you perceive the road surface and handling.
With any, you just get use to the new feel and handling. But only if you are willing to try them.