Interesting thread this.   I'm a lecturer in an FE college full-time. I undertook a Phd in my spare time some 20 years or so ago which meant my job and academic interests overlapped and for all intents and purposes took over my life. The Phd became my hobby which was more or less an extension of my day job. Without going into too much detail - it was not a good thing or time in my life - screwed me over! I love playing and participating in music, going to talks, lectures, researching., folk clubs, folk festivals etc, but it is strictly an interest - a hobby and long may it stay that way. I feel that work and personal interests are best kept seperate. Just wanted to share.