At work it's because things are intentionally made difficult and arduous. Anything from SAP or HCL is stupidly convoluted so that they can extort their customers with expensive consultants combined with the sunk cost fallacy.
Also for users, every 3 months they will change the UI for no reason
As much as I get this sentiment, I chose my profession in part because I like learning and my area requires learning new stuff all the time to stay relevant. The learning part of work is the part I enjoy and look forward to.