Actually there is an alternative. There are a few guitarists who tune their entire guitar in "straight fourths", such as
E A D G C F
Eb Ab Db Gb B E
There is an article on All Fourths tuning on Wikipedia.
Stanley Jordan is a famous jazz guitarist who uses this tuning exclusively.
Freddie Green, the famous rhythm guitarist with the Count Basie orchestra, effectively played only in all-fourths tuning by virtue of the fact that he only played on the bottom four strings of the guitar, moving up and down the neck a great deal, but virtualy never crossing over that major third to the high B and E strings.
Also the Chapman Stick, a unique 10-course instrument related to the electric guitar, uses straight fourths for the top five strings and fifths for the lowest five strings.
When I studied jazz guitar, I determined to teach myself to play in straight fourths. I believe it has many advantages. The more complex the chords and harmonic progressions you are playing, the more the straight fourths system makes sense.
But if you want to learn music by exactly copying your favorite solos and pieces transcribed from famous guitarists, you're going to need to use the same tunings that those guitarists used.