rKortan, IMHO, there ain't much to see on I-10 thru Texas. El Paso has a strange smell coming from a refinery every evening. If I remember right, the mile marker for I-10 in Beaumont, TX (east end of state) reads like 898 miles from El Paso. You can take a solid day to go thru Texas and get bored doing it. Houston does have a beautiful skyline at sunset, which you may get to see a couple of times if traffic is normal
Now, once you leave there, the rest of the interstate should be good riding with a lot of different scenery. There are casinos in LA near Baton Rouge that light up the night. Biloxi, MS also has casinos and I usually stay in one because the food is plentiful and the rooms are reasonable. From Biloxi east, you are seldom more than a few minutes from the beach if you want to cool off or get a good seafood meal.
Also, your map software may be routing you the quickest route or shortest route. Most can be changed from one or the other with the click of a button. HTH