In addition to "softening" up joe public, when "most of" the immigrant population HAS an ID card, proving their entitlement to be in the UK etc, then, if you dont have one, then you're either innocent or a OMFG terrorist/health tourist/illegal immigrant etc.
Hence, to "prove" you're a EU citizen, you'll need to get one yourself, since you'll automatically be suspected of being illegal by not having one, more so if you're not white. How else do you prove you're entitled to NHS services etc, if you dont have one? The government wont "force" you to get one, you'll do it all by yourself.
In addition to "softening" up joe public, when "most of" the immigrant population HAS an ID card, proving their entitlement to be in the UK etc, then, if you dont have one, then you're either innocent or a OMFG terrorist/health tourist/illegal immigrant etc. Hence, to "prove" you're a EU citizen, you'll need to get one yourself, since you'll automatically be suspected of being illegal by not having one, more so if you're not white. How else do you prove you're entitled to NHS services etc, if you dont have one? The government wont "force" you to get one, you'll do it all by yourself.