People buy whatever they think is trendy or high demand or a prestigious. Strong marketing can do the job. There is a saying that apple can sell anything for a million and people will still buy it's just the matter of time. Samsung has strong marketing too this time their tag line was something like "10 years perfection" or something I cant remember but tbh I'm sold just by the packaging

But you saying people using low to mid range phone expect battery to last forever and lightning fast is wrong and isn't nice dont you think ? I'm age 22 I may have more small revenues and asset than you when your my age and someone younger may have start earning 5 figure. Theres always someone better

I dont think it's nice to judge someone just because they have used some cheaper brands phone for business phone.

Anyway to answer your question if everyone thinks it's normal for first few days and so be it . I'll just send for warranty or further diagnosis in the future if problem still occur