Corticosteroids are powerful substances, and have lots of potential adverse effects - and long-term usage can wreak havoc. The physiological side-effects of corticosteroid withdrawal can be quite awful. They are amazing, necessary, drugs for society. But, when something as safe and effective as pseudoephedrine can do the trick (it really is quite safe, and even has less potential interactions with things than plenty of OTC drugs do), there is literally no reason for anything else.

When I get a cold, (pseudo)ephedrine is the only medication that actually really helps. I don't need it often, I just try to remember to buy some once in a blue moon when I'm already at the pharmacy so that when I need some, it will be there. But for people with allergies or those who get sick a lot, the current process is yet another completely pointless annoyance.