A really cute toy and something to boost my ego and test myself ;)

Learning. Hundreds of problems of general or specific nature will arise and will need to be solved. Solving them now we will know the solutions in the future. And of course learning from others :)

I, for one, need a practical VT100 style serial terminal that can use a TV set here :) Will do perfectly :)

A neat entry in CV.

Possibly in far future, a good merchandise for schools etc. Great platform for education.

Great hardware development tool/platform/kit. You have complete control over the hardware so you can extend it as you only desire. (As for me, a built in eeprom programmer is a must. Not necessarily in the general design, just in my personal issue :)

A good use for some obsolete hardware that wastes away littering my room :)

Possibly in the future, my own PDA only I can use? :)