Judging from your name, Lokabrenna, do you consider yourself Lokean? If so, I was not aware that Loke was considered Vanic. If not, sorry for my assumption!
This coming from an Anglo-Saxon Heathen, who doesn't really make distinctions such as Aesir/Vanir. However, I am still wary of Lokeans, however I have met a few who are great company.
I once listened to a podcast where they had a Lokean on as a guest, and she said: "I think I've met one or two Lokeans who I've actually liked!" So you're definitely not alone in being wary of them.
As for the name, I actually use this name on a few other forums. I don't consider myself Lokean, but I know people who consider themselves Lokean or Rokkrtru. They're an interesting bunch, but I know that it's not for me. I don't rage against Loki, though. If it weren't for Loki, I would never have had the interest in Norse mythology that I did, and I don't think I'd be on the path I am now.
You're right in that Loki himself isn't considered one of the Vanir, but some see his wife Sigyn as a Vanir, that's all UPG though.
What is your favorite season?
Summer for the weather, Fall for the foliage!
What is your opinion on what happens to us after death?
What is your opinion on the Æsir, and do you worship them at all?
Well, there are lots of places that one could end up, depending on how they died or whether they were dedicated to a particular god. Some believed they ended up in their grave mounds, or within the landscape (like a mountain), women might go to Freya's hall, slain warriors end up in Valhalla or Freya's hall, most ended up in Hel (which isn't a bad place), since there was such an emphasis on being a successful warrior, from their perspective, of course Valhalla is going to look like the Best. Afterlife. Ever!
Of course, for all I know, there won't be anything waiting for me after death, I'll just cease to exist. Why worry about it? It's better to live life to the fullest than obsess over What Comes Next IMHO.
As for the Æsir, I don't hate them or anything, I know of someone who thinks that the Æsir are all cosmic bullies, but I don't think Frey and Freya and the like would choose to hang around with them if they were being mistreated in any way. I think that even among Heathens/Norse Pagans who aren't as "exclusive" as me, there are gods that they just don't relate to, so they don't give them as much attention, that's basically my relationship with the Aesir. It's not that they're bad, they're just not 'mine'. I also think that it's a matter of the particular kinds of Paganism that I encountered before settling into a Germanic-type path (more on that below).
What made you decide to be Vantruar as opposed to some other variety of heathenry?
Do you feel a particular connection to one of them that drew you in, and if so may I ask which one?
It was a decision that was partly based on the fact that I just didn't connect with Odin, Tyr, Thor etc. and partly because my first foray into Paganism was Wicca, and then after that, it was Goddess Spirituality. By the time I discovered Asatru, all the "Earth-Based" stuff was still ingrained in my psyche (at the time, I didn't know of other variations of Heathenry). Vanatru fed both those needs for me: a path that was focused on a particular pantheon, but with more of an "Earth-based" focus that I was accustomed to from what I had studied in the past. I should mention that I don't consider myself a reconstructionist (for various reasons), reconstructionist-derived is a better fit for my path.
As for which one drew me in, when I was a child, I loved reading about Loki's antics, so I often say that Loki got the ball rolling, and then Freya took over from there! When I became interested in Goddess Spirituality, I stayed away from male deities, and Freya will always be my "go-to deity", but I've warmed up to Frey and have stopped seeing Njord as "the Norse Poseidon". I suppose the short answer is that I've always felt the strongest connection to Freya.