Not all doctors but it is common practice at Urgent Care centers. I've never gone to an UC and not gotten antibiotics and a steroid prescribed (or attempted). This combination will definitely help you to feel a little better by the next morning but they are over done. I also never fill the steroid as then I can never sleep.

Anecdotally, yes – most doctor's visits seem to end in steroid or antibiotic prescriptions. I've known of some doctors that prescribe antibiotics for things like colds just to give the patient a placebo.

The doctor that I often end up seeing refused to let me leave once without a handful of steroid samples: he took my insistence to not be prescribed them for a form of walking pneumonia we both agreed would go away on its own in a couple days and for which nothing could really be done as some kind of indication that I couldn't afford them, so he scavenged random remnants of samples he had around... and also gave me a "just in case" prescription for that antibiotic I didn't need or want. This is even after we had specifically done a test in the office that both he and I knew meant I had a specific mycobacterial issue that this antibiotic couldn't be effective against... I just don't get it :/.

No they don't. But people desire them even when they're not necessary. Which is why they resort to taking "animal" (actually human with animal branding) antibiotics.