firstly, it isn't legal to go out whenever you want, the current emergency laws state you are only allowed to go out once a day for one hour for exercise, work that CANNOT be conducted at home instead of a normal place of work (primarily Key Workers, but also some non-essential roles such as IT professionals facilitating others working from home who require local access to servers or stores, for example), and when required for "essential food shopping", a bottle of fizz and a pizza isn't essential, and although the police aren't currently enforcing this strictly
Just about everything in that paragraph is total bollocks ThisMumisaMan
There are no limits on frequency, time or what is bought when out, certainly in England, where most of us are. I'm aware that there are subtle differences in Wales and poss Scotland and obviously other countries have different restrictions.
If you disagree, please post a link to actual legislation on an official website, which you won't be able to.
You merely need 'reasonable excuse' to leave your home, of which there are about 13 examples.
I've spent several hours outside the house on a few days a week and it's been entirely within the rules, eg
To go to the supermarket to buy whatever they sell eg bread, milk, salad etc plus alcohol, crisps and other thing that you think the shop shouldn't allow me to buy.
To take supplies to a shielding relatives house and walk their dog.
Plus go for walks in the woods and hills local to my house.
DP has also been going to work in a role that's not strictly necessary but he works outside and mostly alone and as he's not eligible for any furlough or other help due to being one of the many not covered by any of the schemes (combination of employed and self employed and didn’t quite meet the 'most of your income from self employment during the relevant tax years' test he kind of needs to earn some money somehow and obviously being able to socially distance means that the risk is virtually none existent
As long as I can socially distance and wash my hands after I've been out, the risk of catching the virus is so low it's not worth worrying about.