I have the Fitbit Charge HR which has in fact been replaced with the Fitbit Charge 2. When I went back to uni after Christmas, I realised that I was doing hardly any steps at all because I caught the free bus to uni, and the town centre is only a 5 minute walk away. Without my Fitbit, I don't even think I would have realised how little exercise I was doing and seeing this motivated me to do so much more. I started walking to and from uni and the days that I wasn't at uni, I'd go for a walk because I actually enjoy walking and I only got the bus because it was free and convenient. Walking makes me feel like I'm ready to take on the day and I feel so productive having already gone for a walk before getting on with work. I think that it is really worth taking the time out to walk somewhere because it feels so good to get some fresh air and doing exercise also makes me feel accomplished. After I started walking more, I also noticed a really positive difference in my body.
If you enjoy walking you can definitely walk without a Fitbit but I find it really helpful as it shows you how many steps, kilometres and flights of stairs you've done plus your heart rate and calories burned. I also love that if I do extra walking, the Fitbit app says that I can eat more food!!! The Fitbit app brings out the competitive side of me as it tells me how many steps all my friends with a Fitbit have done and I can challenge them which is a super fun way to motivate yourself to do more exercise. Fitbit also automatically recognises other types of exercise such as running and yoga if they take your fancy rather than walking.
Fitbit has great customer service and will replace your Fitbit if you have any problems with it at all. They have also said that they will continue to fix any issues with the Fitbit Charge HR even though they do not sell that model anymore. There are so many to choose from, if you don't have a Fitbit yet, I would definitely recommend it.