[dotancohen]

Purchasing, carrying, and maintaining two devices is expensive, heavy, and tedious. Easy always beats safe. Not to mention that there may be significant overlap between work and play for some people. I code Magento (PHP) during the day and contribute to open source PHP efforts as a hobby. In which environment (work or personal) should my notes and bookmarks be?

When I have a company issued laptop I use two machines. When I don't, then I use two accounts on the same machine. Most Linux distros even allow fast account switching in different virtual consoles. I use a different background and panel color for the personal and work environments. It's not a perfect solution, but neither is separate devices.

[can16358p]

This.

My work and hobby life is completely entwined. I have one powerful machine and micromanage my time by switching between windows of work and leisure.

Add the fact that I do coding as work and video editing as a hobby which both need powerful machines, and it would be very stupid, unmanageable, and inconvenient to buy two MacBooks.

[pharmakom]

Dual boot or at least have 2 users.

[can16358p]

I constantly switch between windows and micromanage time.

That's just impossible.