To me, exercise has been a huge part of trying to lose weight. In fact, this is my second go at trying to lose weight but when I tried to lose a few years and did, I was inspired to lose weight because I was working hard at the gym and I thought to myself 'why am I eating this? This is like x amount of calories and almost equal to a session on the treadmill' so for me, exercise gives me accountability. I'm working hard so I don't want to undo it and I also enjoy it. It gives me a sense of achievement when im improving.
Also, other benefits ive seen that I have alot more energy. Before I exercised, I came home from work and just felt so tired and would just crash on the sofa so I def feel less tired now. I also feel like I've got goals to focus on fitness wise so I'm not always focused on shedding pounds but getting fitter.
Exercise isnt just about the gym. It's about finding what works for you. I go to the gym twice a week now and also attend a zumba and aerobics class. Initially I attended the gym once a week plus the two classes but after a few months I've gradually added the extra session. I started off slowly with levels that were comfortable on me and gradually have increased the intensity and tried to build my endurance.
Personally i would recommend exercising. The benefits you gain from it are totally worth it and it can only help you to lose weight
