Assuming this is based on my topic I'll provide these answers:
People should be able to keep a rightful amount of what they earn themselves. We should NOT increase taxes on regular earned income (except probably a little higher at the very top), but tax inheritance since those receiving the income did not technically earn it.
True, they will search for loopholes to purchase goods that hold value and/or buy items in the names of their children and have their children immediately flip for a profit. We have (or will have) the necessary tracking systems to prevent such loopholes. Those who didn't buy the initial item themselves and sell it for a profit should pay a tax on the entire value rather than just the profit.
I'll restate this: everyone has the right to their own money that they earn themselves. Inheritance has only furthered a massive income inequality that has no justification since the individuals receiving the money did nothing themselves to simply "deserve" it.