Ehh, it’s ok in the case of JetBrains - if your subscription lapses your license converts to a ‘perpetual fallback license’ so can just continue using the version you installed when the subscription was originally purchased.
I’m using a 4 year old version of PhpStorm with no issues and no subscription. My PyCharm sub ended 6 months ago and I’m staying on the 2023 version of PyCharm because the latest version comes with lots of AI which makes my CPU fans scream continuously.
I use my searxng instance several times a day.
DNS server/cache/pihole. If that goes down I can’t browse anything.
I also selfhost a SaaS that I built. It’s essential to me that it’s available to my customers although I don’t use it personally.