Because your first comment is inflammatory, and wrong.

Ukraine is far from being a "weaker neighbor" – it's proven to have more of a backbone than all of NATO.

And that "loosing land" part which seems so compelling: those are strategic withdrawals, forcing russians to haemorrhage men and equipment for Pyrrhic advances. Right now, those advances are being reversed: AFU is making significant gains around Zaporizhzhia, and massing troops near Kharkiv for possibly another major offensive.