Unless you build dotnet apps or apps specifically for Windows I won't use Windows for a laptop mainly due to its poor power management reasons.
Personally, I can't stand ads on Windows and I prefer iTerm on my Mac over WSL on Windows. Not to mention that Mac hardware build quality, temperature and power management is much superior to anything that comes with Windows laptops.
I don't have that. Unless you're talking about the self-advertising Microsoft do for OneDrive/Office 365. Apple does the same thing.