Yep, some beilve that building is the esence of the hobby.
Some beleive that you should build your own planes, so you know how it went together, and how to fix it.
Some (like me) build for the sake of building them!! Why? 'cuze I can!

It is a proud moment when you show up at the felid, and everyone 'Ooohs And Ahhs' over your plane, and that first flight [with minor trim] flies just bee-utifully. It's a really positive feel! Knowing you did it from a box of wood!

In the end, it is YOUR plane, covered in YOUR colors, with YOUR pilot, and although there maybe 5 of the same plane at the feild, YOURS looks the best!!

Sig & Great Planes are great first kits. You'll have no problems, and their manuals are very well written, along with some 'hints & tips' (a really nice touch!)