Probably because of the feeling that you only have so much energy for each bucket. Watching TV isn’t taking energy from the dev bucket, but working on a fun but personal project does take energy from the dev bucket.
Of course, this isn’t how it actually seems to work - there is some truth to it for most people, but if you “overdraw” from one bucket and “neglect” another bucket, they will change sizes.
Of course, this isn’t how it actually seems to work - there is some truth to it for most people, but if you “overdraw” from one bucket and “neglect” another bucket, they will change sizes.