Apple has been warning people that the next MacOS after High Sierra (v10.13.x) will no longer run 32-bit programs. In fact, Apple has stopped accepting 32-bit programs for sale in the App Store. After High Sierra the MacOS will only run 64-bit programs. This has been coming for a long time so it's not as if Apple is springing this on people. But BaseCamp (v4.6.3) is a 32-bit program. That means it won't run on future versions of the MacOS.
I've done an online search but I can't find anything from Garmin about getting a 64-bit release of BaseCamp or some new program to take BaseCamp's place that is natively 64-bit. Has anyone on this forum heard anything?
I like BaseCamp. I use it weekly if not more often than that and I'd hate to lose it. I suppose I could keep High Sierra on an external drive or a partition of my internal drive along with the 32-bit BaseCamp but that's a hassle having to reboot to the other drive just to use one program. Garmin is abandoning Garmin Adventues and Cloud Service in May of 2018 a service I've used extensively to post my Adventures for friends to follow and use. I sure hope Garmin isn't abandoning BaseCamp, too.