Sure, resist! If you can afford have a firearm in terms of time and money AND that really does float your boat, go for it.
However, Rule #26: "Your number one Option for Personal Security is a lifelong commitment to avoidance, deterrence, and de-escalation."
Spelling it out for today:
- Don't make yourself a target.
- If you want to be a prepper, the first thing to stockpile is money.
- If you're concerned about home invasion, moving is likely a better idea than shotguns and claymores.
IMO, real instances like Ukraine and Afghanistan have survivors determined more by location and luck. But having a gun doesn't hurt.
I'm not familiar enough with Ukraine to comment specifically.
The spirit of the "lying around" comment was that many many things will be going horribly wrong. Don't put all your eggs in one basket. Be able to morph, learn and adapt as priorities change. Your most valuable weapon is your brain. 
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