Ok, let's see whether you follow that suggested structure;
Body para1 -
As for me, I strongly believe camping play a considerable part in an enjoyable pastime. As the issue is relevant, I have a few reasons in favour of my opinion to recite. Firstly, the great outdoors bring us in contact with nature. It enables us to feel more at ease and exempt from daily bothers. Secondly, from the scientific point of view it's much healthier to spend our time in the frtesh air as much as possible. In addition, campsite and other outside activities are a golden opportunity to have a comprehensive rest-time.
In your first sentence you express your opinion which is not appropriate for a body para. You should have started with reasons as to why campsite is more preferred. Then you can cite your preference as the example to support that reason. For example;
Spending a holiday in a campsite enables a person to enjoy the nature in abundance. One would not be able to have such an opportunity in his or her day to day life and therefore such experience would give a total different relaxing experience to the person. (your first reason and now give a specific example)