Like I said: boring. I do kind of like a lot of the trees here, but I don't think there's any I could call a favourite. Also, a lot of the interesting trees in Finland are limited to the southern parts of the country, where I've never lived and rarely even visited, so I'm not too familiar with those trees. Anyway, I suppose juniper (which I didn't even realize was a tree because they're usually around the size of a shrub here, I think) and mountain birch (which looks pitiful but there's something I really like about it) are pretty nice, but I'm also sure there's some trees I like better - I just don't know them well enough or at all. For example, some of the trees in jungles and savannas seem pretty neat to me, but what do I know about them?

don't have a preference regarding species but big trees...colossal which dominates the nearby landscape and where you'll instantly think this tree sure has seen seasons and don't budge easily

Sugar maple because maple syrup

Grew up in Tauberbischofsheim, Germany.  Birch, beech and oak trees are also pretty common in that area of Germany.  Live in Forth Worth, Texas now they don't have birch or beech trees here but oak trees are pretty common here as  matter of fact the oak tree is one of the most common tree in the entire Northern Hemisphere.  

LOL! Are you sure? Insects, except red ants and a few others, generally don't like conifer resin, cedar wood is used to keep away clothes moths, while turpentine contained in pine resin keeps away furniture beetles. Sure, camphor is more effective, and camphor tree, eucalyptus tree, lemongrass and pyrethrum flowers are the best against flies and mosquitoes. Mosquitoes generally are easier to find where there are trees with large leaves, that when fallen can often contain enough stagnant water to allow mosquito larvae to grow, while conifers have needles or other forms of leaves not suitable to contain stagnant water.

Cherry trees, I even grow a few of them in my garden, I miss so much the one I had in my old house, it had the sweetest cherries :C

It was actually a patch of pine trees clumped close together, mossy ground, retaining moisture, perfect breeding ground for mosquitoes. Any dense foliage will do anyway. Just a minute walking along the river bank and my legs are itching all over again.

Oh, that explains all. In a drier place pines would be innocent, but not in that situation.

Why do I have to pick favourites? Oxygen is good, so yeah.