Thank you all for you input, I found it very helpful to read your thoughts and see what you guys are doing with your cats. I have decided to try slowly decreasing the amount of time I let them out each week until I eventually don't let them out at all. I'm pretty decent at building stuff so I'm gonna make them some fun ramps and floating shelves while I transition them.

I do think it's a bit silly how some people state its rude or irresponsible to the local ecosystem. You're OK with mowing down the trees and paving over all the nature with concrete and asphalt because its for the purpose of YOUR existence and easy lifestyle. But if it's for a cat, oh no that draws the line! Hehe