I'm looking for manga that's really, really slice of life-y. There can be conflict, but everything is resolved in a really nice (heartwarming?) way. Most importantly, it just makes you think: Ahh... it's great being alive after all.

What I'm looking for:
-Comedy, slice of life. Situations that apply to real life and that can make you smile. Cliches are fine.
-Friendship-dominated (preferred over romance, but that's fine as well)
-No ecchi - as in the pointless fanservice - or harem (especially if it's romance)
-Fantasy, sci-fi, horror etc aren't preferred as they don't reflect real life, but if it shows the antics of life, then that's totally fine.
(-Doesn't have to be scanlated or completed)

Probably not the best examples, but still examples nonetheless.
Ookiku Furikabutte
Haikyu!!
K-ON!
Kaidan Tochuu no Big Noise
Danshi Koukousei no Nichijou
Gakuen Babysitters
Amaama to Inazuma
The Children's Teacher, Mr. Kwon

Feel free to point out any related tags or stuff that's in my reading list since I haven't read many of them. Thank you for reading this long post and have a great day!

________________
I'm lazy.

Aqua and Aria

Mono no Aware tag might help too... (It has been translated as "the 'ahh-ness' of things" after all )

________________
~4400 manga completed
~1700 ongoing...

I'm a bit shocked to not see Yotsubato! on your list of examples.
Barakamon
Flat (AOGIRI Natsu)
Boku Wa Ne
Kimi to Boku
Yokohama Kaidashi Kikou
Doubutsu no Oisha-san
Gisèle Alain
Kotonoba Drive
Ryushika Ryushika
Hiso Hiso - Silent Voice
Aka-chan to Boku
Hoiku no Ou-sama
Boku to Miraiya no Natsu
Dadadadan.
Tsubaki Biyori and Tsubaki Dayori
Nekomichi
Chi's Sweet Home
Kominami Shoutarou, Ie o Deru o Hjimemashita.
Momokan
Tsuzuki wa Mata Ashita
Working Holiday

The supernatural/fantasy ones that I'd still recommend:
Noramimi
Natsume Yuujinchou
Hinamatsuri
Neko Musume Michikusa Nikki
Yuurei Apato Kanrinin
Youkai Apato no Yuuga na Nichijou
Tsumi to Bachi

Last edited by calstine at 1:34 am, Oct 23 2015

Haha, I'm still relatively new to reading this kind of theme and I've only read like two out of the lists above (not including Yotsubato D: )

Gonna check them out right now! Thank you both!

________________
I'm lazy.

Nothing really gets slice-of-life right like manga does, which is why it's one of my favourite genres. Luckily (or unluckily? lol, idk) for you, your request caught my eye, so now I'm going to keep bombarding you with recs! *Cue evil laughter*

Sumire 16-sai!! and Sumire 17-sai!!
Himitsu no Kaidan & Otome wa Inoru
Sketchbook
Shounen Maid
Azumanga Daioh
Koohii Jikan
Cotton
Binbou Shimai Monogatari
Goggle
Nemuranai Machi kara
Little Forest
Shiina-kun no Torikemo Hyakka
Family Complex
Pikupiku Sentarou Selection: Funwari Haru no Maki
Danshigurashi
Yoiko no Kokoroe
Hard Romantica

Sci-fi/supernatural/fantasy, etc:
So What? (WAKATSUKI Megumi)
Ayakari-Zoushi