For a discussion on the merits of socialism I see little discussion of socialism. In fact the OP doesn't seem to understand what socialism is.
For clarification socialism is collective (democratic) ownership of the business, it can be divided into two sub categories
Top down socialism such as state socialism
Bottom up socialism such as syndicalism ie when workers control/own their place of employment.
For the former economically speaking is unmanageable as large bureaucratic structures can't adapt quickly to market changes. Socially speaking it restricts freedom as well.
As for the latter well it's just that most people are unable/unwilling to make informed decisions about the direction of a company.
Now what the OP was asking, I believe, is what is wrong with a welfare state, the traditional arguments are it violates individualism, and liberty.
Of course both of those arguments are bullshit as in the case of individualism we act collectively all the time, personally I don't think it right to be willing to act collectively to throw someone in jail but not be willing to avoid sending said someone to jail by providing them with basic food/shelter/etc, especially when it is cheaper.
As to the it violates liberty by taking someones property, the problem of course is that IMO property in the large sense is a positive right, not a negative one and stored wealth is definitely a positive right.