

Did you set your Mint to autologin to desktop? If so then your Keyring is then locked and you get prompts to unlock it when you want to use anything that needs it - websites, software like email etc. The keyring holds your passwords and credentials to pass to on as needed and keeps your system secure. If you set your desktop to not autologin - i.e. have a login screen - your keyring is unlocked automatically as you log on to the PC and you don’t keep getting prompts to unlock the keyring. You can disable the keyring entirely or give it a blank password, but it’s better to use the login screen to keep your device secure, and let the keyring do it’s thing in the background even though “login automatically” is so easy to tick and use. The wallet is the same concept on KDE desktops.
Otherwise the only password prompts you should get are similar to windows - when you want to make system level changes.
I’d recommend OpenSuSE Leap with KDE. User friendly, stable, with a good GUI for making all system changes. Fedora KDE is also a good popular distro; I’m not sure how good it’s GUI is but I’d be surprised if you need to use the terminal. People often recommend the terminal (because it IS quicker - often one step instead of “go here, click here, click here”) but there is usually a GUI way of doing everything.

It’s not about the item whatever it is, it’s about your reaction to it. This was something your spouse got you to show you that they love you; they bought something they thought you would want and need because they see you using this item all the time. It doesn’t matter that they know you like using old things - for them the thing they got you is an expression of their love for you, and your reaction (lets return it, I don’t want it) is like rejecting their love and is insulting.
I don’t know how you said it to your spouse but the way you’ve described it here your reaction sounds like it was entirely factual and emotionless. It may not be what you’re saying but how you said it that is the issue. Did you acknowledge how kind and thoughtful the gift was? Did you acknowledge what it means to get a nice gift from your spouse before saying that actually it’s not something you’d use?
Instead of seeing it as a tit-for-tat exchange and the same as you gifting t-shirts, you need to understand that this was a personal gift from your spouse. You also need to acknowledge you’re difficult to get gifts for because you like old things. You’re not the bad guy for wanting to return the item, you’re likely the bad guy for how you’ve gone about it and hurting your spouses feelings in the process. It may be that you’re not an emotional person or have difficulty reading other people including your spouse - that’s fine but you may need to acknowledge that you’ve hurt their feelings even if you didn’t realise or mean to, and apologise - that may help a lot. It would also be helpful to tell them how your mother-in-laws gift has sentimental value and you didn’t want to replace it. It may still be that you end up returning the item - but it’s far less important that your relationship with your spouse.