Well, I would say the precedent is for policies to be slowly brought in (little steps / non-mandatory), so for me it's edging towards it being an option or possibility.
What you've got to take into consideration is that while many may do it sensibly, you'll have others who don't: stop off at a shop; buy petrol; invite friends along etc.
It's also less cars on the road, which is much easier for cops to deal with when they're already dropping like flies; plus, you don't have to worry as much about fuel.
While working today, I saw a noticeable increase in the use of cars on the road compared to the past few days, so I am actually glad they're bringing it in.
Thats pretty much life in a nutshell though mate - its a slippery slope when we enforce the majority because of the minority.
For what its worth I think people have by and large been fantastic in all of this - whilst the media largely berate the minority its easy to forget that this thing is unprecedented and people have literally had their lives flipped upside down in the space of a few weeks:
Working from home / not at all
Not seeing loved ones / friends / work colleagues
No schools/nurseries
No pubs, restaurants, cinema's, shops, sport, concerts, days out
Allowed out the door once a day for exercise
A simple 20 minute food shop taking about an 2 hours and having to wipe our backsides with leaves due to bog roll shortages.
Just some of the big sacrifices that we as a collective society have had thrust upon us - I think the government have to give people that little freedom otherwise it wont take long before the natives start getting restless the longer the suns out and the weeks tick by on lockdown.
Way I see it - some bloke driving about or walking his dog in an empty field isnt akin to going a football match or sat in a packed out Macdonalds - we need to have some perspective considering the peak hasnt even hit us yet.