We really don't need the amounts of meat (if at all), averagely consumed in the US, EU or many other places nowadays. Not by far.
And if you insist: there are plant based products today, that are often tastier and offer better nutrients than large swaths of the meat products they replace.
There certainly is no lab-grown alternative for a tasty slab of expensive beef (I presume, I haven't looked for it), but there certainly is a tastier and healthier plant-based alternative for that €2,99 bucket of fried chicken things. Or for 6 of the 10 cheap burgers at your supermarket.
Point: we really don't have to wait for lab grown meat. Not if you are a meat lover, nor if you are a habitual meat eater.