1) You do realize it hasn’t even been a year, right?
I guess because we give each other space. It’s good to spend time with the special somepony you love, but absence makes the heart grow fonder. And gives the nerves time to relax.
2) I would think so.
3) Everything’s fine and it’s none of your business.
4) I understand what you’re trying to say, but just because a unicorn could potentially do something better than an earth or pegasus pony doesn’t mean they’ll be able to do it as efficiently. Even if an extremely powerful unicorn could levitate, they’d never be able to fly as well as your average pegasus. Same thing with an earth pony’s incredible endurance.
Even then, we’re talking cases of very powerful unicorns. Most unicorns just aren’t capable of the sort of things you might expect because of somepony like Twilight Sparkle. Even a unicorn like Rarity is above average.
The only reason the big-wigs in Canterlot are able to sit around and manage others, is because other ponies are willing to work for them. Willing; not forced. Yes, they started life off with unfair advantages, but they used those advantages. It’s not like they get unlimited chances. Failure is always a possibility.
All I’m trying to say is, don’t hate unicorns. If you have to hate somepony, hate ponies who are selfish. And that’s not a racial feature.