Gads. I pull the fore end and barrel, spray the gas parts with RemOil, and wipe off the excess. And I wipe off the outside with a slightly oily rag. Takes less than 5 minutes. I do this whether I shoot one round or 500. Once a year I will do a complete teardown and clean everything. I have been doing this since about 1965. For the first couple of years I was a bit anal and did a lot more every time, but I found it unnecessary.
I have had dozens of shotguns, but I have yet to find one I like better than the 1100/11-87 platform, for me. They do not carry the current in vogue tough guy image, but I am well past needing any image. I have had 13 of them in total; still have the '63 and four more. They will not go as long between the quick spray and wipe cleanings as some of the newer designs, but that doesn't bother me. I am not yet that lazy or short of time. I have carried one all over North America hunting, and I will not own an unreliable gun.