Kinda, sorta.
I've been very indecisive on what exactly I want. I can also be a very spur of the moment. Like instantly just decide to rip everything apart and start over. I can also be pretty impatient - if I decide I want something or decide to change something, I should've gotten it yesterday or finished it already).
Here is a short run through. I had a good sized O Gauge carpet railroad several years ago. Lots of fun. That gave way to my time in N, HO, and G. I've got some print photos around but would be difficult to pull them out.
Here are some photos of the various incarnations of my O Gauge layout since 2010.
Here is my first 4x8 with scenery. Before going with scenery, I was running a toy/tinplate type layout on green carpet on this table.
After vastly improving (really just blowing the dust off) my scenery skills, I expanded that original 4x8. Shortly after finishing the expansion, I tore the entire layout down as I was unhappy with some spots in the track work. I could have easily fixed it and wish I did. I sure do miss having this layout! 
After I tore the old layout down, I tried a new 4x8 with Atlas track and scenery. Hated the Atlas, later replaced it all with tubular track and Ross switches. Soon after (~2 months), I tore that down and, wanting to keep it simple, went to a clean looking tinplate layout with focus on the trains. Here is the result:
That clean look started to look a bit too clean...trees, lichen, accessories, etc start to appear. I remove the entire yard and try no switches, just loops and more buildings. I also added the elevated loop and the elevated bump and go trolley.
Here is a slightly out of date (late Fall 2015) photo that shows roughly where I'm at now. The elevated trolley didn't last long. I felt it really obstructed the buildings, etc. The yard is back, although a bit smaller (4 car capacity). A tunnel was built. I also built a new elevated loop as I wanted to get rid of the original with 0-27 curves and go to 031 curves. I also replaced the 0-27 curves in the center with 031. I also got a (free!) NIB Lionel Village Trolley Set with Track/Transformer from the 1990s and got that going. Now I have two bump and go trolleys running, 3 trains and lots of accessories (lots of lights!). Since this photo was taken, I added the other "new/old" free trolley near the high rise department store building, moved a few buildings around, reorganized my yard to remove some S-curves and a switch while still keeping the 4 car capacity. I've also added a few smaller buildings and accessories. I thought I had a more up to date and current picture but I guess I was wrong. I will have to update my photo. I also ditched command control (YAY!!) and went back to 100% conventional.
With the thought of selling our long time home in the coming years looming, I've also been very happy with the current layout and have no intention of changing things. I'm sure I'll add a few minor things and reorganize a few areas but overall, what you see is what will stay for a while! 
