Who on Nostr: Lightning I trust for day to day transactions, but not for storage. Hence there is ...

Lightning I trust for day to day transactions, but not for storage. Hence there is still the issue of, say, moving the funds onto lightning and back off there to do the weekly shop. Personally I wouldn't keep more than a few hundred $ worth on lightning for any length of time. You are right, the issue is block chain congestion. So the more popular Bitcoin becomes the more likely than ever it's usefulness will be limited to large amounts and big players, or else very small change activity on lightning. By extension, this will limit growth in value and price. This also means the system is vulnerable to DDOS and/or big players congesting the mempool at critical times and thereby manipulating the system. Increasing competition among miners is the only mathematical solution I can foresee. The bottom line is that in order for Bitcoin to remain useful and keep increasing in value, affordable domestic scale mining is the next area of development urgently needed so we can have millions more miners.