Judicial intervention in India regarding 'live-in relationships' has significantly impacted the traditional understanding of marriage and family, signaling a gradual shift towards recognizing diverse forms of cohabitation and family structures. Historically, Indian society has predominantly upheld the institution of marriage, particularly sacramental marriage, as the sole legitimate basis for family formation. However, the judiciary, through various landmark judgments, has acknowledged the reality and rights associated with live-in relationships, prompting a re-evaluation of societal norms.

Judicial Intervention and its Impact:

1. Recognition of Rights: The Supreme Court of India, in cases like D. Velusamy v. D. Patchaiammal (2010) and Indra Sarma v. V.K.V. Sarma (2013), has recognized live-in relationships 'in the nature of marriage' for the purpose of granting maintenance, protection under the Domestic Violence Act, and even inheritance rights in certain circumstances. The court has laid down criteria to determine if a live-in relationship qualifies as such, emphasizing factors like shared household, pooling of resources, and public presentation as a couple.
2. Protection under Domestic Violence Act: The Protection of Women from Domestic Violence Act, 2005, explicitly includes women in 'relationship in the nature of marriage' within its ambit, providing legal recourse against domestic abuse to women in live-in relationships.
3. Child Custody and Legitimacy: Children born out of live-in relationships have been deemed legitimate and entitled to inheritance rights, further blurring the lines between traditional and non-traditional family units.

Future of Marriage in India:

1. Evolving Definition: While traditional marriage (religious or civil) will likely remain the dominant form, judicial recognition of live-in relationships introduces an alternative. It suggests that the legal and social definition of a 'family unit' is expanding beyond the confines of formal marriage.
2. Reduced Social Stigma (Gradual): The legal validation may gradually reduce the social stigma associated with live-in relationships, especially in urban and more liberal settings. It offers couples a choice to cohabit without the immediate pressures of formal marriage.
3. Marriage as a Choice, Not a Compulsion: For some, live-in relationships serve as a 'test drive' before marriage, or as a permanent alternative. This could lead to a more considered approach to marriage, where it is entered into more as a conscious choice rather than a societal expectation or compulsion.
4. Persistence of Traditional Marriage: Despite these changes, the institution of marriage is deeply entrenched in Indian culture, religion, and social fabric. Factors like family honour, social acceptance, religious rituals, and the desire for legal certainty (especially regarding inheritance and children) will ensure its continued prominence. The majority of Indians, particularly in rural areas, are likely to continue preferring formal marriage.

Future of Family in India:

1. Diversification of Family Structures: The traditional nuclear or joint family model is being challenged. The judiciary's stance paves the way for the recognition of diverse family forms, including single-parent families, blended families, and families formed through live-in relationships.
2. Legal and Social Adjustments: As live-in relationships gain more legal standing, there will be a need for clearer legal frameworks regarding property rights, maintenance, and child welfare for such couples. Society will also need to adapt to these evolving family structures.
3. Focus on Functional Family: The emphasis might shift from the 'form' of the family (married vs. live-in) to its 'function' – providing care, support, and a stable environment for its members, especially children.
4. Challenges to Inheritance Laws: Existing personal laws, largely based on religious scriptures, primarily recognize marital relationships for inheritance. Judicial pronouncements on live-in relationships will necessitate a re-examination and potential reform of these laws to ensure equitable rights.

In conclusion, judicial intervention has brought live-in relationships into the legal discourse, providing a degree of legitimacy and protection. While this marks a significant evolution in Indian jurisprudence and societal norms, it is unlikely to completely displace the institution of marriage. Instead, it will likely lead to a more pluralistic understanding of family and relationships, where traditional marriage coexists with other legally recognized forms of cohabitation, reflecting the increasing complexity and diversity of modern Indian society.