My new life changing discovery is that you don't need to spend an hour. I've long resisted going to the gym for exactly the reasons you describe, but I've recently joined a gym just round the corner from my office and realized that I can go either before work or on my lunch break, and more importantly that by having a plan before I go and being efficient about it I can be in and out in 30 minutes or less. For me the practical difference now between going and not going to the gym being at work at 8.30 and being at work at 9.00.
My new life changing discovery is that you don't need to spend an hour. I've long resisted going to the gym for exactly the reasons you describe, but I've recently joined a gym just round the corner from my office and realized that I can go either before work or on my lunch break, and more importantly that by having a plan before I go and being efficient about it I can be in and out in 30 minutes or less. For me the practical difference now between going and not going to the gym being at work at 8.30 and being at work at 9.00.