Based on available information, particularly from personal accounts and cultural observations, here are some key things people from Bhutan often miss when they go abroad:
Sense of Community and Social Connection:

Bhutanese society is known for its strong sense of community.1 The close-knit relationships and social support networks are something many miss when living in more individualistic cultures.
The concept of "lab mae lab mae" (roughly translating to "everyone knows everyone") highlights this interconnectedness, which can be absent in larger, more anonymous cities.

Cultural and Spiritual Atmosphere:

The pervasive influence of Buddhist culture in Bhutan, with its emphasis on mindfulness and compassion, is a significant aspect of daily life.2
People may miss the frequent presence of religious ceremonies, prayer flags, and the overall spiritual atmosphere.

The Natural Environment:

Bhutan's pristine natural environment, with its clean air, lush forests, and majestic mountains, is something many Bhutanese deeply value.3
They may miss the unspoiled landscapes and the sense of connection to nature.

Food:

Bhutanese cuisine, with its distinctive flavors and use of ingredients like chilies and cheese (ema datse), is a source of cultural identity.4
Many Bhutanese miss the authentic taste of their traditional food when abroad.

The feeling of home:

As with many people that move away from their home country, Bhutanese people miss the feeling of being at home. The feeling of belonging, and the comfort of being in their own culture.

It's important to recognize that individual experiences vary, but these are some of the common themes that emerge when discussing the experiences of Bhutanese people living abroad.