A currency where it takes days to clear payments unless you pay massive fees - fees that are hostage to whatever vagaries the miners have? And if you don't, you are left in limbo where you have no idea whether it takes minutes, hours or days to move your money?
A new symptom of an old problem -- namely Bitcoin's scalability -- that came with the increasing popularity of Bitcoin and that will be solved sooner or later. A few years back Bitcoin was both faster and cheaper than bank transactions and we'll reach that point again sooner or later. Meanwhile, even at its worst, Bitcoin is still cheaper and faster when it comes to international remittance.
A currency which is heavily impacted by "civil wars" with rival crypto currencies?
I wouldn't call a weekend of a full mempool a "heavy impact". Otherwise you could also argue that banks are "heavily impacted" by weekends and banking holidays.
If you're talking about the impact on price, than that's a silly argument. Price changes like these are just short term fluctuations and don't change the technical and economical fundamentals.
If you're talking about other impacts, please elaborate.
A "currency" even less stable than the former Zimbabwean dollar.
How so? Please elaborate.