I must not have seen your reply.
Let's split this up so it does not become a double-barrelled question:
Are you saying that you are against all forms of welfare?
Helping people is a noble cause, one that I am completely on-board with.
I am saying that I am against all forms of
compulsory taxation that have welfare as a justification.
Notice that I am choosing my words advisedly. Tax money ostensibly collected for the purpose of public assistance is not always used to that end - and even when it is, it isn't always done successfully.
Are you opposed to paying for the basic necessities for those who cannot provide for themselves?
I have no problem with charities or not-for-profit organizations whose goal is to provide financial assistance. I have personally donated to many causes over the course of my life, even when my own money situation was difficult.
The principle difference is that donating to a charity or non-profit is voluntary.
If your choice was binary, current system vs. UBI, what would be your arguments specifically against UBI?
No justification is required to be skeptical. Skepticism is the default position in science, until evidence is provided indicating that a hypothesis has truth value to it. I have not been presented with evidence that UBI has been applied more successfully in the past when compared to non-compulsory welfare provisioning, so I remain skeptical.
That being said, I can play along for the sake of discussion.
One can point to numerous instances in history where government has interfered with the price of goods or labour, or provided subsidies and assistance, with the
stated goal of improving the lives of people, but with the
actual result of creating shortages, surpluses, cartels, and all the way up to economic disasters and famines. There is evidence and reason enough to be reluctant to try for another centrally-planned solution when so many have failed catastrophically in the past.
Better, I think, that we do nothing as opposed to doing active harm.
But isn't it cold to simply do nothing? Callous? Aren't we ignoring the plight of fellow human beings?
When people are suffering and in distress, there is a powerful compulsion to
do something. Sometimes, this desire to feel useful in combating the tragedy of the universe's indifference to us can lead us to make poorly thought-out decisions for the sake of conscience. We end up causing harm in our attempts to propitiate our consciences, and we rationalize the harm done by our misguided efforts by invoking our good initial intentions.
I prefer, instead, to believe in human ingenuity, charity, willpower. I prefer to believe in people's ability to adapt and become stronger in the face of hardship. And above all, I believe in people's freedom from compulsion by outside forces.
Until evidence emerges, preferably historical examples, of UBI being applied both beneficially and with no equal-or-greater negative side effects, we must be skeptical of it, however much it may appeal to our sensibilities as charitable people.