I often find myself interested in a particular target species and want to bookmark observations for later use in the field (i.e., access via the Android app). If I get really obsessive, I might want to export that set of observations so I can load it into GIS software or turn it into waypoints for loading into a GPS unit.
I found at least one discussion of this issue before (https://forum.inaturalist.org/t/separate-like-and-bookmark-buttons/418/29). If community members confirm here that there’s still really no good way to do this, I’ll reframe this as a feature request and give more background and justification in that forum.