Offset Dec NG 3.5 put

I sold 1 Dec NG futures contract at 3.462. If the price was around 3.5, I would have let ride and see where it's settled, but since I'm well within 3.5, I just sold 1 futures lot to offset my assignment. I didn't buy any Jan contract because there's a spread of 0.15 between Dec and Jan (carrying cost etc). The Jan contract is currently being traded at 3.6 or so. So I'll wait to sell 3.5 put if it drops. Since I didn't buy the Jan contract, we all know markets will just shot from here. If I was at loss, I would have rolled over without any choice.

All in all, my break-even point was 3.416, so my profit was $460 less commissions over 2 weeks. Not bad, but not so great either. Actually I was lucky that today's NG storage report came shorter than expected, but at one point NG was at 3.8, so I tried to exit my option at 0.3 or so to get $500+ profit, but usually floor traders make the options spread very wide on the expiration date to screw some dumb people, so I couldn't do it.

For some reason, many people are scared of getting assigned and brokers are so careful about it. I'll post again once I have a final settlement. As a matter of fact, I'm not 100% happy with ThinkOrSwim due to the following:

-You have to pay commissions to get assigned for futures. I understand for equities, it's a PIA process, but futures, there shouldn't be any assignment fee like RJO or tradestation.

-They don't let me trade on an expiration date. There are times I don't know if I get assigned or not, so I want to wait until the next day of an options expiration day, which is a futures expiration day for NG. I have no choice but to trade overnight while bid/ask is widen to offset my position.