Hi Ryan,
I agree with Graeme wholeheartedly.
It's up to you to decide what you really want to do. If you are getting bored with something you are doing, then stop. It's not worthwhile wasting your time.
Most important, don't rush into something you are not 100% sure of.
You may find it better at present, to test-drive as many routes as you can lay your hands on.
While you are doing that, look at the construction of each layout in detail. See what assets they used to put it together. Pay particular attention to understanding the 'ins' and 'outs' of sessions, layers, modifying a few assets to your liking. Check out YouTube tuition videos on Trainz. This will give you heaps of knowledge and possible technical skills that you can use eventually for your own creations.
Check out Blender, Sketchup, GMax, and stretch your abilities a little further. Maybe create some worthwhile assets that others can use.
Then one day, you'll get a brilliant idea to create something, no one else has thought of.
Then stick with it and persevere until it is completed. (As an example, I built a 6 metre square HO gauge layout, and it took me 13 years to complete. I did complete it and I felt good about it.)
Good luck,
Roy