I also hate that. There is, however, and easy fix. Use two freeware programs:
jacquelin.potier.free.fr/ShortcutsSearchAndReplace/
http://melkov.narod.ru/misc/tools/regedt33/
Install your program normally then copy the folder to the desired location. Use the two freeware programs to find and replacce the old location with the new. Then you can remove the old folder. I've done this literally hundreds of times.