No, I’m not inconsiderate and no, there won’t be any abnormalities. Most cars don’t make it to the junkyard for engine problems; why does everyone always worry about their oil and their break in periods? If you hear about problems, it’s because someone blew a head gasket, or someone punctured a cylinder because something fell into the engine. The biggest wear item in the engine is the cylinders, rings, and heads (cylinder wall). There’s nothing much to break in here these days. Yeah, maybe there’s a possibility that after 300,000 km you’ll need new rings, but at that point it doesn’t matter whether you’ve driven like an old women or a 17 year old. They’re old and have had a lot of wear.
To prolong the life of your car, the best thing you can do is not crash it. Take care of the body. Make sure your tranny doesn’t fall apart. Electronics are likely to fail. Emission systems are likely to fail. You may need an alternator. Or a fuel pump. Vacuum lines fail. A/C compressor. Cooling system. These are all things you need to worry about in selling you car. Your engine is the thing that’s absolutely the least likely thing to ever fail. Keep in mind when people say “engine failure” they often don’t mean the engine per say, but associated components.
Of course take the above with caution – look up you engine history. Certain engines have problems that are inherent to thier design. But again, these are usually non-/minimum-wear items.
Try to consider all of the pieces of junk cars you’ve ever heard of being retired for service. Where was the problem specifically?
In the grand scheme of everything that could possibly go wrong with your car, the engine is a very minor concern.