Do you only contribute what is useful for your own use cases, or whatever you can improve the map with?
Wiki has a huge article about editor usage statistics: https://wiki.openstreetmap.org/wiki/Editor_usage_stats
Also a lot of stats here, with up to date graphs: https://piebro.github.io/openstreetmap-statistics/#eb30
TLDR:
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You can see your personal editor usage statistics on https://hdyc.neis-one.org This is mine:
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OSM browser editor and Go Map!!! on my iPhone. I mostly do what interests me (bike parking, pedestrian/bike trails, etc.) but sometimes I work on more general stuff.
I like JOSM. It's complicated but I started with easy things and slowly grew my knowledge of the software. Now it's quite easy to hop on for a few minutes at a time to an hour or two adding whole neighborhoods.