The Ukrainian President may not mind dying and taking the country with him, and that may be true for many other Ukrainians, but there is a duty from those arming Ukraine to both bring peace and save Ukrainian lives, and even infrastructure.
There is no point sending endless arms in if the war cant be won by the West by proxy - and frankly I dont think it can. Not unless you are prepared to escalate to potential World War. And if the Russians take over soon they may also get those weapons themselves.
If you dont want to be ruled and dictated by Putin then you have to reckon with the fact that open warfare against an enormous Russian army is likely not the way to achieve that.
I despise war,and the arms industry, and the armchair generals sending in weapons without fighting themselves, and only have anti-war bones in my body, and dont want people to die and suffer needlessly, so thats my perspective. I think we're at a stage where Ukranian people have made their point, the world has heard it, but will need to retreat against the oncoming occupying forces. More heavy weaponry doesnt help that.