vacuum line elimination

[K.C. 5.0]

My reason for asking the question was why have extra hoses that are not doing anything to help you either. With all the wiring and hoses that are going everywhere; Why not eliminate as much of the excess crap as possible. It will make your engine bay look cleaner and it will cut down on time when your disconnecting and connecting things. I guess I want the best of both worlds. I want to get rid of everything I don't need.
As far as hvac controls what does vacuum do for those? And as far as buying a book to learn about it I will if I have to but I thought that was the point of these forums was to help each other out. So everyone doesn't have to go out and buy the book.

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95gt 80k, MSD 6AL, MSD coil, pulleys, fpr, cold air kit, off road h-pipe, flowmasters, 3.73, 9mm wires, mega bite jr lowers, kennybrown subframe connectors, edelbrock performer intake, 70mm TB, 73mm C&L, 24lb injectors Aluminum Driveshaft, Tri-Ax shifter.